First time having sex

How long should you be with someone before you have sex with them? I'm 15 and I've had a boyfriend for a month maybe and I like him and trust him and in the moment I want to have sex with him so bad. I've given him blow jobs and he's fingered me, but I don't wanna do something I'll come to regret. ADVICE NEEDED. Is 15 too young? Are we moving way too fast?