Just need to vent

I know what I need to do but right now I just need to vent. Last fall me and my bf agreed to get rid of social media because it seem to cause nothing but trouble. We have been together for over ten years and yes there is trust issues from things in the past. He seemed off this morning before he left for work and I asked him about it and he just brushed it off that I'm just being paranoid. He was working a few hours from home tonight and said he was too tired to drive all the way home so was going to stay at his bosses camper. Something didn't seem right about that because it sounded like he was still driving. So I decided to do some digging and discovered he is back on snapchat and posted pics earlier today. Now I'm left wondering if he was being honest about tonight. I know if i can't trust him I should leave. My mind is just racing now tonight and I needed to just get it out.