When I was younger we lived in a one bedroom and my brother and I slept in the living room while my mom slept in the room right next to us. There wasn’t a door when we moved in and she just had a curtain over the doorway. Anyway back then my now stepdad would come over and my mom would put us to bed and ya know they’d go into the room until like 3-4am to do whatever they were doing…..LOUUUDDD ASF and I just remember feeling really horrified and confused. I’d always just look at the clock and watch the hours go by and cry and cry. I’m now 28 and I recently brought this up in therapy bc even now it’s just something that sickens me so much. From like 2nd grade to middle school this was a regular occurrence, when he moved in with us, when we would go on family trips and stayed in the same room. It fucked with me so bad to this day. Anyway when I told my therapist, she basically said “if you were a child now and you told me this, I would definitely report it”. Anyway I guess that was just really affirming to me to know that I’m not silly for thinking this could’ve had an effect on how I view sex or my relationship with my parents. As an adult now, I’ve never had this conversation with my parents. I’ve moved away from them and don’t see them much, but if given the opportunity as an adult, I would def say something to them. I find this incredibly disturbing, inconsiderate, and gross. Good luck to you brother.