Circumcised or not?πŸ€”πŸ™„πŸ˜¬πŸ˜³

Sooo... this may be a dumb question but i just gotta ask
Im a virgin. The only πŸ† i've EVER seen in my life is my bf's. Like twice (gave him a handjob). How the hell do I know if he's circumcised or not?Β 
I promise this is a real question you guys, please don't mock meπŸ˜‚
Help!
And also, if he's not, is it problematic? Can you give a bj if he's not circumcised?πŸ€”
(Yup, i'm very very new at this... i'm also 22βœŒοΈπŸ˜‚πŸ™„)