Everyone has thoughts and fantasies. It’s normal. The only time that it becomes a problem is when you cross the line between thinking about it and actually wanting to do it/doing it.
If you’re seriously considering cheating on your boyfriend, if you’ve reached that point where you would want to be with another person, then yeah, it’s time to reevaluate what your situation is.
If you’re just fantasizing about other people, that’s totally okay. You’re not cheating on him by having fantasies. If you daydream about having sex with…Amber Heard, for example, that’s not cheating. If you fantasize about having sex with one of your friends, that’s not cheating.
However, if you start thinking that you really want to follow through with it and have sex with someone else, then that’s an emotional betrayal, and if you actually have sex or even just kiss someone else…it’s cheating. There’s a significant difference between having a fantasy and something that you would do in reality.
Some things to think about.