Cheating?!

So,

long story short.

My boyfriend of almost 3 years broke up with me. 

I had a feeling for these almost 3 years that something was going on  but I didn't know how to say it to him. He said he'd be cheating the whole time we were together

leading up to the breakup he was flirting with other girls and our whole relationship he'd laugh and have a good time with other people but as soon as I came around it was like he was quiet and like his best friend died (metaphor). And he was super insecure about what I wore and who I talked to. So no crop tops or shorts for me. and I couldn't talk to a single guy I was friends with without him thinking they wanted me or I wanted them. to the point the last couple months almost everyday fights Abt him accusing me of cheating. He always talked to me like I was a child and put me down in front of other girls (I never noticed this until now, looking back). also last year he confessed to "looking at other girls."

when we broke up he confessed to trying to get with this girl who we had a fight Abt previously of me saying he was trying to get with her and him saying no. then he goes into this thing Abt how he knowingly would cause fights bc he knew I'd cave and feel bad and give him what he wanted (which what my friends told me he was doing but I didn't listen). then he says he was cheating the whole time we were together with so many girls he cant keep count then started bragging to me Abt what he was doing with them without saying names.

the part that makes me feel the most like an idiot is he said I'd be with him and the girls would walk by and they'd make faces at each other in suggestion to what they'd be doing later.