Suspicions

So me and my SO have been having some issues. When I was back in my home town visiting family he stayed home. Well he told me “hey babe I’m going to bed. I’m to tired to talk” well according to Snapchat he wasn’t home. So I called him and asked him where he was he told me he was at the boardwalk. I said ok. Well he finally came clean and told me he was at the bar. Ok.... so that made me loose a little trust in him. Well again this weekend I went back to my hometown for Easter with my family again he didn’t come. We told me “hey babe I’m to tired to stay awake I’m going to bed” ok cool. Well I saw he was still in Facebook THEN he liked one of my post (which he said was an “accident” he didn’t mean to like it) so I got pissed. And yes I brought up what happened the last time he lied to me. Well he never told me who he went to the bar with the other night just “some friends” and we made an agreement together to not go out to a bar or club unless the other one is with you. Well ALSO he’s been kinda shady with his phone. I can’t touch his phone without him loosing his cool. If he ask for mine I don’t ask why or flip out I just hand it to him why? Because I don’t have anything to hide. I am 100% faithful to my fiancé. But I’m starting to have suspicions that he isn’t being so faithful...

our roommate tells me I’m “tripping” and that “that boy loves you” but idk. I feel like I’m just here to take care of him, make sure the house is clean, and the bills are taken care of and to be there when he’s horny. He doesn’t do anything with me anymore. We don’t go out, we don’t just kick back and cuddle and watch tv anymore. Something has changed and when I bring it up I get called “crazy” or “insecure”....

Idk what to do anymore.... advice please