i found old cheating convos

my boyfriend and i have been together 2 years and we have a 6 month old son. we’ve had trust issues from the past but i’ve been trying to move on and forgive him. lately i’ve been realizing no trust has been built in the past year and a half since he cheated on me. it was over text, he swears up and down it was never physical. last night he gave me his instagram and fb so i could just have some peace of mind. well today i was snooping and i found messages w 3 different girls from late 2019 after i knew he had already cheated once. one was w a girl who had started the flirting and kept saying “if you’re single” and he never said yes or no but just kept avoiding it and flirting w her anyway, then i found 2 convos w random girls that look atleast several years older than us and he started those convos by sending an unasked for dick pic and was calling them baby and asking if they liked it. he works out of town for his job sometimes and when he goes out of town he gets super drunk and always does dumb shit. he always told me he had never sent pics or been physical or anything other than flirting. i’m literally so disgusted rn idek what to think. i don’t wanna look at him, i don’t wanna touch him. nothing. even though it was a year and a half ago i’m extremely upset and livid that he looked me in the eyes and told me he hadn’t done anything but flirt. when i asked him if he’d like to explain he said “i was fucking drunk do you really think i’d do that shit sober? not saying that’s an excuse but” like what the actual fuck