Age doesn't matter?

So my boyfriend and I have been together for 7 months now, but we keep our relationship a bit private, because I'm almost 22 now, and he's 17. But everything's great between us, there's no problem with maturity. But in our case, does age matter? Is it okay? I don't even know why I'm asking because we love each other and that's all that matters. Plus I look younger. 😂