boyfriend subscribes & messages onlyfans girls

earlier i went thru my boyfriends phone, yes i know i shouldn’t be. but he always hides stuff and he lies a lot (i always catch him in his lies lol) but i saw he spent $15 on onlyfans ?? so i went on his browser bc i was already upset since i told him what my boundaries were and how i thought this was cheating. bc you could literally go watch porn for free ?? so going on his accnt .. he messages these bitches. like tells them they’re sexy and how he wants to knock them up .. and i was just in shock i told him to leave and it was basically me upset j him crying bc hes “sorry” and he “made a mistake” i told him to go home and i didn’t want to talk to him. we’re going to talk tmrw but i just don’t know what to do, i’m never good w makin decisions & i have no friends to ask for help so can someone help me :/ we’ve been dating for 2+ years and i don’t want to break up but idj .. he crossed the line this time and really hurt me. i just need some advice please :/