How to Tell If Your Wife or Girlfriend Will Cheat, and How to Prevent It Beware the warning signs and stop her before she strays.

Preventing Trouble Before It Starts
There's no such thing as a relationship without problems. But most can be solved if you're willing to put in some effort, the experts say. It's when you ignore trouble on the horizon, or stop caring enough to do anything about it, that disaster is likely to strike. "If you're convinced she's having an affair, she's probably having one," Lusterman says. But if you pay enough attention early on, you can probably fix what's wrong long before it gets to that point. "The most important thing for an affair-proof marriage is that both people are very engaged in the relationship, committed to it and take pleasure from it," Lusterman says. "If you don't have that, you really need to get to work."