How safe is it to have unprotected sex if I'm on depo?

Cynthia
So I've been on depo provera since November of 2015, and it's now August of 2016. My body has gotten pretty use to it, but my worry is that I'm still HIGHLY at risk for getting pregnant. My boyfriend may be getting friendly this Saturday, and he doesn't want to use a condom. He says it's my coice, so I just want to know if it is a good choice. 
I'd appreciate any help or opinions on the matter😅💗