He previously would cum in me, now

Either doesn't trust you that you're taking birth control or likes the sensation of coming outside the vagina

Are you on birth control?

There's only one person who knows why he's changed to doing this, and it's highly unlikely that he's going to explain himself here.

If it's something you miss and it leaves you feeling like sex is incomplete or sad that you haven't satisfied him as much as you could, then tell the dude this. Not in a nasty, accusing, interrogating way, but in a "This makes me feel like..." sort of way. If he's an intelligent, decent, caring guy, he'll pay attention to what you say, and maybe you can then come to some sort of compromise that satisfies both of you. If he just ignores your feelings, then you need to think about your long-term future with him.

My impression is that lots of guys do this because it's a long-standing convention in porn, and they come to believe that means it's the normal way to end intercourse and everybody does it all the time. I think other guys feel a degree of disgust about their semen, and there's some twisted shit going on in their heads which means they like the visual image of their sexual partner being "degraded" by having nasty cum squirted on her body. Personally, I've never done it, because I know perfectly well what my semen looks like, I don't find it disgusting, I've never wanted to degrade women I care about and coming inside a pussy is one of the best feelings in the world.

I appreciate my girlfriend being on birth control and letting me ride bareback. But, always pull out. Maybe it’s a fetish but I would rather cum in her mouth or at least on her tits or ass. And she’s good with it.

strange no better feeling than cumming inside . i hated when guys pull out n cover me with cum . i always loved feeling cum inside me .

Maybe he likes cumming on you rather than in you.