You know him. You've probably dated him — maybe you are now. The serial monogamist jumps from relationship to relationship so he's never alone. I wouldn't call serial monogamy a deal breaker, but it's certainly a trait to watch. Know what you're getting into before you can't get out by watching for these 10 signs.
- He has more ex-girlfriends than you have girl friends.
- He's lived with multiple girlfriends.
- If it's long distance, he asks you if you've ever considered moving — like near him — before sex.
- He was dating someone when you met him.
- He says "we" and "us" too early.
Get the final five after the jump.
- His family has met multiple girlfriends.
- He can't keep track of presents, confusing previous girlfriends' with yours.
- He tries to plan on a trip together before you're an official couple.
- He tells stories about "friends" but never specifies who they are.
- You got back together, but he dated while you were apart.