"If you met him through her, there is always going to be a little weirdness in the situation, and if this is your girl, what guy is ever worth that?" Asks one woman we spoke to. "Also do you really want to be linked that closely in degrees of sexual separation to a good friend? I don't."

__C) Someone she went on one or two dates with, and it didn't work out. __

If your friend went on a few lackluster dates with someone, that's hardly reason to make someone off-limits forever. Still, it's imperative that you have a conversation with your friend before going ahead with the date.

"If there wasn't enough interest or a spark, your friends should have a fair crack at him, too." Wrote one respondent.

But if he (or she) is the one who didn't call her back, then think twice before dating. It's not cool to go out with someone who rejected your friend.

When your best friend is in a relationship...

A)...and you love her new girl/guy, but miss hanging out with just her.

Even the most loyal of girl friends can sometimes get neglectful while in the stages of newfound love. It sucks that your friend seems to spend all her time with her Significant Other, but you've been in love before, right? Give her time to be a shitty friend, and hope that some day, when if you ever get so wrapped up in someone, she'll return the favor.

But if enough time has gone by and you feel like your friendship is seriously on the rocks, definitely have an (in-person, non-threatening) conversation. Make sure to focus on your friendship ("I feel like I haven't gotten quality time with you in forever, are you free next week?") and leave the S.O. out of it.

And if you ever find yourself navigating the tricky waters of a new relationship and old friendships, make sure you're putting in time with just your girlfriends, while also making an effort to integrate your significant other into the group. (Just don't invite the old ball and chain all the time.)

B)...and you really cannot STAND her significant other.

Hating your friend's boyfriend or girlfriend is the worst. Suddenly your social circle gets a tool-ish new member, and you have very little say about it. You cannot believe your darling BFF can't see what an absolute monster she's dating.

But you cannot say anything about it to her.

It doesn't matter if he has horrible breath, makes vaguely inappropriate remarks whenever she leaves the room, woefully takes advantage of her, has terrible taste in music, or sucks the life out of every party with his mere presence.

If she's dating him, you've got to deal.

If this guy really does suck, she'll see it eventually, or it will become obvious that no one in your group of friends loves the guy. But if you tell her she may feel like you aren't supporting her or she's being attacked. If she really loves the guy (barring extreme circumstances), you've just got to be a supportive friend.