Condoms

I'm Goug to be sleeping with my boyfriend for the first time but he refuses to wear a condom. I am on birth control, but even though it's my first time, he has an old history of sleeping with several girls, and I asked if he'll wear a condom incase of any STI's but he took it as an insult. I don't know what to say to him, safety first right? Or am I being unreasonable. What do I do?