Past relationships

Okay so I’ve been with my current bf for about 3 months and stuff has moved quickly let me tell you. We have been friend for a while before we dated. He helped me through one of the worst breaks ups I’ve ever been through which has brought us so close.

But some things I have questions about. He never wants or at least a asks about my past lovers/boyfriends which is fine I guess. And he never has brought up his either and more recently I’ve been curious, I want to know more. I know only a few details of his past 3 year on and off relationship I don’t even know her name. Should I? I’ve scoured his ig, his sisters, anything really and I can’t find anything. Should I ask him more about his ex’s or just leave it?