Once a cheater, always a cheater?

[F, 31] I’ve been seeing someone [M, 46] for seven months now and I fear I know too much about his past to ever fully trust him… He is just now settling a divorce (married ~15 years) and has confided in me about his affairs during marriage (started by saying 3, now it’s up to 5 - justified because wife is confirmed crazy). During our 7 months together I’ve caught him in several lies (mainly about other women or his past with women) but most recently because I caught him downloading Hinge the day after Christmas (for the third time in our relationship). I was sick during the holidays and he claims he only downloaded the app because he “felt I was pulling away, have a long list of guys after me and he wanted to feel like he would have a shot if we do end.” He claims he didn’t create the profile and instantly regretted it but I don’t know if I believe him… mainly because he didn’t come clean until I showed him the hinge download code I found on his phone.

Our relationship start has been rocky due to outside factors (messy divorce), him getting on dating sites, etc. but when we are together everything is amazing. He claims he wants to marry me, have a family with me, etc. but maybe he’s just feeding me what I want to hear?

After the Christmas Hinge blowup, he has deleted all of his social media apps from his phone and “never wants to lie to me again, wants to work on himself, etc.” I love him and want it to work but starting to think I’m making the wrong decision.

My biggest hang up is that I haven’t actually seen a conversation between him and any other girl… or there is no proof of anything… his phone is always TOO clean… and he is a master at hiding things with his past affairs…

Am I stupid for still being here? Once a cheater, always a cheater?