Need help 🙈‼️

I've been with this lad for Nearly 6 months and he keeps asking me would I bang him and I'm only young so I say no maybe when we are older but then he's like "why baby ?" And I usually reply with "bc we are only young and idk whether I would want it" and we always have arguments about it but I love him with all my heart and I don't want to loose him but I just hope he doesn't turn out to be a f**kboy bc that would just piss me off - help me should I just say yes?