Am I overreacting

Debating on ending engagement. Not sure if im overreacting. A couple of months ago I, 36F, learned my fiance, 33m, lied about a family event so I wouldn't be included. At that time we had already been together over 3 yrs. His excuse was i may cause drama at his family function. His "close" cousin got married a couple of years ago and his ex was in the bridal party. When it was brought up he always lied to me about not being there yet a month after we were engaged he couldn't hide it anymore. I let that go. Anyways last week we got into a huge fight and he said he couldn't trust me (due to me getting close to a friend when we were on a break) and that anytime he's not with me or working he thinks im going to sneak around behind his back. My response to that was then why propose if he didn't trust me and if that was the case I never would've said yes or gotten back with him. So ive had this odd feeling for him to be so paranoid and went through his phone. I have now discovered that in the last 5 years that we've been together he would go out drinking and to strip clubs with his friends. We didn't live together and we live an hour away from each other. I would tell him I was going to sleep, he'd say goodnight on FaceTime and then message his friend to go out drinking or the strip club. Im very irked and feel some type of way. Mad? Sad? Annoyed? Vengeful? I dont know if ending it once and for all is too much. Help.