Most Helpful Girl
Okay I disagree with the other answer because I know you like this guy and you DONT want to run like hell. I think you should just tell him "If I ever catch you lying that's it for me, no second chances." Look, the guy obviously cares about you or he would not make you his girlfriend. he did those things when he wasn't exclusively with you anymore. JUst tell him what I said above and if he cares he will be affected by what you said and it'll make him realize that he can't lie to you. You can also tell him you don't trust him 100% and say you will both have to work on that. I think that's all you have to do, you do not have to dump him becuase you obviously like him or you wouldn't be posting this question. Just talk to him maturely and set him straight. Say he'll have to work on his trust and you'll work on yours.