When forced to decide which is worse: sexual or emotional infidelity, guys say sex.
Women are more upset by the emotional connections their man makes.
Men believe women have sex when they're in love, accoring to research in the Journal of Marital and Family Therapy.
Women surveyed think men have sex, whether in love or not.
When it comes to cybersex, things are more complicated because both sexes say they're unclear about how much of a threat "on-line love" is to a relationship.
