Cum inside?

I want my boyfriend to cum inside off me, like when we want to do it for long periods of time he uses a condom but when it is just like a quickie thing we don't use anything and it feels better to both of us and he always pulls out way before and now I am getting to the point where I just want to hold him close and not care if he does it in me or not, and I am on birth control and we both said agreed that if I still get pregnant that it wouldn't matter(birth control hasn't worked for anyone in my family), but how could I tell him I don't want him to pull out without it being weird or anything