End it or stay?

I have been with my boyfriend nearly two years which is in about seven months time it feels as if I do not have feelings for him as much like when I am with him I am normal like we're a couple but I don't really snog him it's just a peck on the lips because I still feel guilty knowing that I have had sex with another guy that I knew for years it was a bad mistake because me and my boyfriend broke up cos I told him I didn't have feelings for him like I used too but we eventually got back together when we got back tougher he asked me " have you seen any guys while we wasn't together?" I had to say no cos he would just think im a slag/slut when really I am not. I just didn't want too hurt him I am still living with the guilt it's just eating me away knowing he doesn't know the truth it's horrible!! 😖 but then I do love him as well he's controlling I can't have social network sites such as facebook etc but yet he still got his he wouldn't even give his password to anything but yet he asks for all of mine obviously I said no! he even deleted my BBM sign in 😐 but when I  saw him he was on his phone I could see he still had his bbm messager😐 i do not think I trust him...... And I do not forgive myself for what I did!!!