I’m a man with a female best friend — here are the 7 boundaries that we absolutely need to have

Cole Matheson by Cole Matheson | November 17, 2025, 9:23 am

People love to question whether men and women can actually be friends. Every time I mention my friendship with Jess, someone inevitably raises an eyebrow or makes a comment about hidden feelings or inevitable romantic tension.

Here’s the thing though. Jess and I have been close friends since college, and our friendship works because we’ve set clear boundaries that we both respect. No drama, no confusion, just a solid friendship.

But I’ll be honest, it didn’t start that way. We had to figure out what lines needed to be drawn to make this work, especially since we’re both in relationships now.

Today, I’m breaking down the seven boundaries that keep our friendship healthy, drama-free, and totally platonic. These are  practical guidelines that came from real conversations and a few awkward moments we had to navigate.

1) We’re completely transparent with our partners

This is non-negotiable. Sarah knows everything about my friendship with Jess, and Jess’s boyfriend knows about me.

There are no secret hangouts, no deleted texts, nothing that would make our partners uncomfortable if they saw it.

I learned this one early on. About a year into my relationship with Sarah, she mentioned feeling a bit weird about how often Jess and I texted. Not in an accusatory way, just honest discomfort. That conversation was a wake-up call.

Now, Sarah has Jess’s number. She’s met her multiple times. She knows when we’re hanging out. The transparency removes any potential for suspicion or jealousy because there’s nothing to hide.

If you’re keeping your opposite-sex friendship a secret from your partner, that’s a red flag. Not because the friendship is inherently wrong, but because secrecy breeds distrust.

Your partner should feel secure knowing about your friends, regardless of gender.

2) Physical boundaries are crystal clear

We’re not overly touchy. A quick hug when we meet up? Sure. But we’re not cuddling on the couch or holding hands or doing anything that could be misinterpreted as romantic.

This might sound obvious, but I’ve seen friendships get messy because people didn’t set these boundaries early.

Physical affection can send mixed signals, especially to outsiders or to your partners.

Jess and I keep it simple. We treat each other the way we’d treat any other friend. No special physical closeness just because we’ve known each other for years.

It’s not about being cold or distant. It’s about respecting the relationships we’re in and not creating situations that could make anyone uncomfortable.

3) We don’t use each other as emotional substitutes for our partners

This is a big one that doesn’t get talked about enough. When you have a close friend of the opposite sex, it can be tempting to vent to them about relationship problems or lean on them emotionally in ways that should be reserved for your partner.

I’m not saying we never talk about our relationships. We do. But there’s a difference between casually mentioning something and using your friend as your primary emotional outlet when things get tough with your partner.

If I’m having an issue with Sarah, I talk to Sarah first. Not Jess. Jess gets the condensed, already-processed version after Sarah and I have worked through it.

Emotional intimacy can be just as powerful as physical intimacy. If you’re sharing your deepest fears, frustrations, and vulnerabilities with your opposite-sex friend instead of your partner, you’re essentially having an emotional affair.

4) We avoid situations that look bad, even if they’re innocent

Perception matters. Even if Jess and I know our intentions are pure, we avoid situations that could be misinterpreted by others or make our partners uncomfortable.

For example, we don’t go on weekend trips alone together. We don’t have dinner at romantic restaurants just the two of us. We don’t stay over at each other’s places without our partners present.

Some people might say this is overthinking it or being too cautious. But here’s what I’ve learned: boundaries aren’t just about what you know is true, they’re about respecting what others might reasonably feel uncomfortable about.

Sarah trusts me completely, but that doesn’t mean I should put her in positions where she has to defend our relationship to her friends or family. Avoiding sketchy-looking situations is just basic respect.

5) We include our partners in hangouts regularly

Jess and I do hang out one-on-one sometimes, usually grabbing coffee or catching up over lunch. But we also make an effort to include Sarah and Jess’s boyfriend in our plans regularly.

This serves multiple purposes. It shows our partners that we value their presence. It helps them feel connected to the friendship rather than excluded from it. And honestly, it’s just more fun when we all hang out together.

I’ve seen friendships crumble because one person’s partner felt constantly left out. When you’re always excluding your significant other from your opposite-sex friendship, it sends the message that they’re not part of that world. That breeds resentment over time.

Group hangouts also take the pressure off. There’s no weirdness, no one wondering what you’re doing or why you need to spend time alone together so often.

6) We don’t cross into inappropriate conversation territory

As close as we are, there are topics that Jess and I just don’t go deep on.

We don’t talk extensively about our sex lives. We don’t share intimate details about our relationships that should stay private. We definitely don’t flirt, even jokingly.

This boundary matters because words create intimacy. The more personal and vulnerable you get with someone, the closer you become to them. That’s great with your partner. It’s a problem when you’re creating that level of intimacy with someone else.

We keep conversations light when it comes to relationship stuff. We talk about work, our goals, books we’re reading, stupid stuff that happened during the week. Normal friend stuff.

If you find yourself thinking “I can’t tell my partner I talked about this with my friend,” that’s your sign that you’ve crossed a line.

7) We’re prepared to adjust if our partners need us to

This is the ultimate boundary. If Sarah ever came to me and said she was uncomfortable with my friendship with Jess, I’d listen. Really listen, not just dismiss her concerns.

Our partners come first. Always. That’s not being controlling or jealous, it’s just the reality of committed relationships. If the friendship is causing genuine distress to the person you’re building a life with, something needs to change.

Being willing to adjust or even end a friendship if necessary doesn’t make you weak. It makes you someone who understands priorities.

Jess and I have talked about this, and we’re both on the same page. Our friendships are important, but our relationships are more important.

Rounding things off

Male-female friendships absolutely can work, but not without intention. You can’t just wing it and hope for the best. You need clear boundaries that both people understand and respect.

The boundaries I’ve laid out here aren’t about limiting friendship or treating it like something dangerous. They’re about protecting it. When you have clear guidelines, there’s no confusion, no drama, and no reason for anyone to feel threatened.

Jess and I have maintained our friendship since college because we’ve been upfront about these boundaries from the start. We’ve navigated relationships, job changes, and life transitions without any weird tension because we knew exactly where the lines were drawn.

If you have a close friend of the opposite sex, have the awkward conversation. Set the boundaries. It might feel uncomfortable at first, but trust me, it’s worth it. Your friendship will be stronger for it, and your relationship will be healthier too.

The key is mutual respect on all sides. Respect for your friend, respect for your partner, and respect for the relationship you’re building with the person you love.