texting another girl exchanging porn

so i was suspicious of my boyfriend cause we were watching a movie together and a girls photo came up on his phone (snapchat) he turned away from me

i didn’t talk to him for three days

today i pretended to be normal and got into his tumblr and snapchat

come to find out he and this girl been flirting hardcore and where exchanging porn and stuff she was begging him to come to another state to sleep with her

i dont know what to do should i confront him i actually wanna leave cause this the second time somthing like dis happen

and if i confront him would it make me look like pyshco i was rigth sooo🥺