<human>: Sorry for editing mistakes, I'm on mobile.

Lately, my mom has been bringing this one guy home. It's her boyfriend. I don't really know much about him, as he just comes through the front door and they immediately go to my mom's room and closes the door. I (admittedly) have not been making an effort to get to know him at all, but it's not like I have the chance to either, only saying a few words to me if he does see me out in the living room. I don't really care about this in all honesty, if it makes my mom happy then it's fine by me. 

However, they recently began having sex while I'm home. I'm in the living room most of the night which is like 10 feet away from my mom's room and I can hear it. I'm not entirely sure why, but this disgusts me. I don't generally care what they do in her room but it's very obvious what they're doing. This guy has his own house and from what I gathered has no roommates. There is no reason why they can't go over there. It just makes me uncomfortable and I feel like I should go in my room and stay there, since it's the room farthest from my mom's. Any advice? I could really use some. Thank you.

Can you give me the gist of the text in a nutshell?
<bot>: My mom has sex with her boyfriend while I'm home and it makes me uncomfortable since they're within a close proximity.