healing

My boyfriend got a dui in 2014 behind my back, I remember the night he got out of jail and told me he'd never hurt me again.. then I find out he went to a strip club behind my back in 2015 with his family... yes his aunt said his cousin begged them to go.. he's not obsessed with porn or strip clubs.. never entertained another girl and here I am. He's fast asleep and I'm dealing with the trust issues.. the feeling that In 2014 he said he's never hurt me again and he did... and it's all lies. I've been seeing therapists and hoping my trust will come back but I feel hopeless. I don't know how to move on and not feel like if I put my trust in him and stop going through his phone at night and asking where he is.. he will do something that will hurt me.. do I leave? Do I wait and see if I can get over all this.. I am so confused... we've been together for 4 years by the way. He's 23 I'm 21..