I find it interesting that you haven't met him before... I mean, your sister and him must have dated. It seems to me that maybe he doesn't have a real interest in the family, and therefore may not respect your sister, his future wife?

I've seen Dan In Real Life too. Don't go bowling with him whatever you do!

#31, he may have TOO much of an interest in the family. but srsly i agree. if you're getting married that means the person already passed the mommy/daddy/ sibling tests. i hope the meeting was short and you texted or called sis after telling her what happened so they could discuss sans you.

Its F Her Life... But its better to know this BEFORE the wedding...

O-M-G! Your sister should dump his ass.

To #9 That isn't completely true. Not ALL Guys feel the need to go out and be noticed, but I can name a number of guys that I know that will flirt, even while they are dating. I know when my guy goes out to the club with his guy friends he's gunna flirt, and he tells me about it (in a we don't keep secrets from each other sort of way). It makes him feel more desirable, without jeopardizing our relationship. I'm also way more likely to have a great night with him after. To OP: He doesn't give out his number though... that's the sketcy part, to me. Though you should find out if it was really his number!

I hope you told her. You did right?

maybe they live on opposite sides of the country, so they've never met each other? there could be plenty of reasons why she never met the guy or seen a picture. but hey, look at things from the guys side. he's about to get married. that's a HUGE commitment. and he could just have a flirty personality. exchanging numbers doesn't mean anything. i was with my ex thirteen months and still flirted with girls, i probably got close to 20 numbers in that time. but i never once even thought about cheating on her, and the break up had nothing to do with the other girls. so before you go dissing this guy, calling him an ass, a prick, saying the sister should dump him, try seeing things from his side. seriously people.

"Today, I introduced my sister to my fiance. She greeted him by name and handed me his number. Apparently they had already met. FML"

sounds like the beginning of a romantic comedy, like "dan in real life."