Chuck him and find a new boyfriend.
ask him upfront
you catch him out.
If you can forgive your sister, you can forgive your boyfriend. It doesn't necessarily mean that you should stay with your boyfriend. Cheating is cheating and if that is not acceptable to you, you should find someone who will respect that wish.
by asking your best friend to spy on him
No it is not cheating on your bf. As long as nothing physical happens your not cheating.Talk with your boyfriend about how much you're allowed to do with other guys without cheating him. Everyone has different ideas of what cheating is and what matters is that you two find a common ground and agree not to break that.
you cannot ask us if our boyfriends our cheating on us YOU IDIOT!!! signed genefer16 feel free to respond
Find a new boyfriend. If he did it once and you forgive him. He'll do it again and expect the same.
there probably cheating on you
If you have a girlfriend and a boyfriend, then you are cheating on both of them.
Then do nothing and be glad he is no longer your boyfriend.
Answer If you know for sure that your new bf is cheating then perhaps it's time to drop him and find another boyfriend, who needs the hassel of a guy who lies from the seat of his pants.