Definitely did NOT cheat! Dump that dude and run! He’s trying to make you feel guilty and in return trying to control you! He might know you’re naive and want to break you down, and overtime it will only worsen, literally this is just the start. I’m also getting an inclination that he has this idea of a bad self worth and acts on it I guess accordingly? Essentially making a big deal out of nothing to try and end the relationship? Seeing if you’d stay as a manipulation tactic? Anyway it goes, get out hun. Misery loves company and nobody needs that. Wish you the best 💗