Yeah, it's possible that the neighbor in his situation is overreacting. His situation might be completely different from what I experienced. Then again, it might be exactly like what happened to me, and his neighbor may just be fed up having to hear him have sex all the time.
That said, sometimes people are louder than they think, and there are quite a few of us (my girlfriend and I at that time, for example) who aren't interested in being a part of someone else's lovemaking at 8AM on a Sunday morning, etc.
And I've been on the other side of the card, myself, in a dorm room with my girlfriend who screamed like she was getting a root canal when we did it, and I just had to resort to covering her mouth and accept that we were being rude to the neighbors (but meh, it was a college dorm, that's what happens there!).
How do you go about "sound-proofing" your bedroom in an apartment building anyway? I heard the guy I'm talking about screaming through the floor. Did you pad the ceiling with insulation or something?
In any case, none of that matters much.
If it's apartment living, which it seems to be, it's something you need to learn eventually. You're stuck living in close proximity to a lot of other people. You can choose to be considerate of their needs or you can end up having conflicts. Some people are unreasonable, and if they are, you can either move out or ignore it. This guy said they're having trouble ignoring it and it's ruining their love-making, so my suggestion is that they move.
