How do you know if your wife or girlfriend is having an affair, or at least seriously thinking about it? To find out, we went to investigator Anthony DeLorenzo, co-author of 28 Tell-Tale Signs of a Cheating Spouse:

1. There’s no communication at home. “If she isn’t talking to you, she’s talking to someone else,” DeLorenzo says.

2. She avoids having sex with you. “Since women have affairs for love, not sex, she won’t sleep with her husband unless she’s forced to.”

3. She has a male “friend” who’s a good listener. “Even if she isn’t doing anything yet, he knows he’s first in line.”

4. She works a lot of overtime or leaves early in the morning. “Most of the time, people who have affairs will cheat with someone they’re friendly with on the job.”

5. She seems restless or irritable at home, especially on weekends. “When a woman has a new romance, she can’t help thinking about the other person even when she’s at home.”