This guy I'm dating told me...?

They're obviously on a "break" or something, and while they're on this little "break" he's ******* around with her on the side. You're just a distraction, don't even get involved in this. He's lying, it's obvious, and you need to get out of that situation. That's like having his baggage hanging around all the time, and really, why would you want to go through that? It's bad enough having to deal with exes and emotional baggage, let alone have them LIVING under the same roof as your guy.