Curious and confused

So both my boyfriend and I are bisexual (he's had experience with both sexes, whereas he's my first and only) and I've heard he's "bottomed" before but he's usually fairly dominant in bed with me and never talks about the men he's been with so I don't really think anything of it. But recently he's kinda started making a couple small jokes about me pegging him, (ex: I told him I had a goofy dream about him and he immediately teased asking about if I pegged him in it & another night he was goofing around and asked me "do you wanna fuck me in the ass?" but couldn't even get halfway through asking without laughing)

do you think he's trying to hint at it or am I reading into it too much? I'm really not all that dominant and I like the feeling of him inside ME more than I'd imagine I would like pegging but I know a lot of guys LIKE that sort of stimulation and I want him to be happy so I think I'd be willing to try if he really wanted me to. But really I don't want to like,, insult him by bringing it up if he's really only just been joking around.