How do I know if I’ve “finished”?? /u/unregulated-0 Sex

I know this sounds like a really dumb question, but without getting too into it, I haven’t been interested in sex whatsoever before my boyfriend, I haven’t even been into masturbation. Even now, with my boyfriend, masturbation doesn’t quite do it for me. I’ve only recently started having sex with my boyfriend, and from what I’ve heard it sounds really obvious to know when you’ve “finished” but I haven’t felt anything like that while having sex with him. I know he’s finished, but I still want to keep going and I don’t want to say anything if he’s already done and wants to do something else, also because he still lives with his parents who don’t respect his privacy and could walk in at any second, so it feels like I’m putting him at risk by going for longer. Any advice??

I know this sounds like a really dumb question, but without getting too into it, I haven’t been interested in sex whatsoever before my boyfriend, I haven’t even been into masturbation. Even now, with my boyfriend, masturbation doesn’t quite do it for me. I’ve only recently started having sex with my boyfriend, and from what I’ve heard it sounds really obvious to know when you’ve “finished” but I haven’t felt anything like that while having sex with him. I know he’s finished, but I still want to keep going and I don’t want to say anything if he’s already done and wants to do something else, also because he still lives with his parents who don’t respect his privacy and could walk in at any second, so it feels like I’m putting him at risk by going for longer. Any advice??