We been together for a couple months and he recently started acting funny and disrespectful. I initially thought he was cheating but didn't want to believe it until I seen him on snap with this chick I immediately go get checked for ant STI's and recently was told clamydia was positive. I'm embarrassed to go get it squared away although I need to. But I was told he had sex with this chick before me during me and after me from his mouth . And he called me out my name and left me to walk 50 home alone. I cried the whole way. what should I do?