From the office to the campus dorm to romantic comedies featuring Julia Roberts and Meg Ryan, single men and women have wrestled with this question and sometimes been smacked down after flirting with the rules of the buddy system. There's no doubt that sexual tension can run high in a male-female friendship, especially if it had a romantic past, and without a wedding ring to mark either party as private property, the opportunity to explore a more intimate dynamic is always present. 

 

But, despite popular insistence that a man and woman can't have a conversation that isn't permeated with cartoon thought bubbles of unclothed body parts smoothed to perfection in the Photoshop of the imagination, plenty of singles would rather enjoy their opposite sex friends without "benefits." 

 

Chances are you or someone you know has settled into a comfortably platonic groove with at least one such single friend, who is by now "just one of the guys" or "as close as a girl friend." However, you may still be mystified about what it is that keeps these cross-gender pairings on the friendship track while others derail somewhere between Frenemyland and Hookupsville.

 

Let's examine three male-female duos that have a good shot at lasting friendship and three that prove the point of anyone who's ever said that single men and women can't be friends:  

 

 

1. The Big Brother & Kid Sister (aka The Big Sister & Kid Brother)

Believe it or not, men don't want to get in the pants of every woman they meet. The legs in those pants might not be attractive to a certain guy, or the girl may be his type as a jogging partner or study buddy but not so much as the mother of his future children. Likewise, a girl might go to the end of the earth for her best friend but wouldn't want to kiss him if he was the last guy there. In short, some male-female duos are just lacking the attraction factor.   

 

Oftentimes, this is the pair that reminds you of that sweetly irritating familial rivalry you were raised with. One minute they're pranking each other, the next one is rushing to the other's defense. They understand each other implicitly and make a formidable team in work or play. But if you pop the cork on the bottle of sexual tension you assume they share, you discover it's flat. They can't muster a smidgeon of chemistry between them.

 

These sibling-like sidekicks are the best of friends…and best left as friends.

 

2. Not-Worth-Its

This offshoot of the Big Brother & Kid Sister pairing is a little more incestuous. These are the single friends who may occasionally wink at the boundaries of platonic friendship but, for legitimate reasons, have determined not to cross them. Maybe the chemistry doesn't sizzle enough on either end to jeopardize the friendship, or perhaps they recognize that the differences which fire their friendly debates would burn them as a couple. Whatever the case, each has considered it while watching reruns alone on more than one Saturday night and concluded that it's not worth it.

 

Since Not-Worth-Its acknowledge a latent attraction, they are always at risk of giving in to their curiosity in a lonely, drunken moment and ruining the friendship. But if they're dedicated to maintaining solid boundaries, they have at least a decent chance of staying cool with their friendly vibe.

 

3. Exes Without Regrets

You've probably heard the adage that exes can't be friends, if not had it shoved down your throat once or twice by amateur counselors intent on saving you from your own optimism. Unfortunately, if you failed to heed their warnings, you may have discovered that they were right on the way home from your ex's place, minus strategic articles of clothing and the scabs that once protected your relationship wounds from a safe distance. As much as we'd like to believe that platonic love conquers all, most of the time, it doesn't.    

 

However, as with every rule, there are exceptions. The first occurs in that rare event that both members of a couple want out of the relationship due to incompatibility, waning attraction, or some other innocuous reason and part ways amicably. They continue to think the world of each other even though they no longer want to be each other's world. Did I mention this is rare? 

 

More commonly, one or both parties will walk away hurt, angry, or both but, in time, may recover, get on with life, and revisit the amazing friendship that was buried for so long in a dysfunctional relationship. In this case, reconciliation hinges on true healing, which doesn't happen effortlessly or overnight. Both members must reach a place in which they no longer resent each other and, more importantly, not only accept that they're not together but no longer want to be. It helps if the two had a strong history of friendship before the romance evolved. It also helps if they have moved on to new relationships so that neither will be tempted back by loneliness or nostalgia. 

 

In both these scenarios, the key to genuine friendship is that the ex-partners are Exes Without Regrets. They may have fond memories of a time when they were more than friends but are now perfectly content to leave those memories in the past tense.