Silent treatment

So my boyfriend and I have been dating since September. In February we both got tested for STDs and came back positive for Chlamydia. I got treated and my boyfriend is refusing to. I keep reminding him hey you need to go back to the clinic to get treated. Everytime there is always some excuse to why he can’t. I EVEN OFFERED TO HAVE THE CLINIC SEND IT TO THE PHARMACY!! And he says he doesn’t want to pay for it. Now he is giving me the silent treatment because I won’t have sex with him. He wakes up, jacks off in the bathroom, then goes to work. He doesn’t say anything to me when we are both off. I don’t know what to do. Sorry I just need somewhere to vent.