1. He's no longer interested in sex, or worse, he's recently learned some new tricks. A dramatic change in sexual behavior can mean two things: Either your sweetie is trying to avoid any situation where he might have to express emotion or attachment to you, or he's getting it somewhere else. Old dogs only learn new tricks if someone is teaching them.

2. This isn't about Toilet Paper! This is about Life! If he's picking silly fights, or there's an unusual increase in emotional distance, you've got bad news. If your guy or girl is picking stupid fights all the time, they may be trying to get you to make the first move.

3. He says, "I need some space" or "I think we should see other people." By telling you he wants to see other people, he's not technically breaking up with you (so no big crying scene to endure) but he's given himself a way out. Of course, the second he gets a little distance, he's going to make a run for it.

4. He gives you that little pat on the back. Watch out for this one. A person who gives you a hug while patting you on the back is indicating that they are uncomfortable with what they're doing. The bigger the pat, the more discomfort they feel. Could be the kiss in front of Aunt Mildred. Could be garlic breath. Could be you.