Ive never heard another couple having sex, but i was the one thst was heard. My exwife and i lived in an apartment when we first got married. We lived above another couple who we had become friends with. So one saturday night we all decided to go on a double date. Except it was snowing like crazy. So we decided to have them up to our apt and i cooked instead. I was showing my neighbors around and we got to the bedroom. So my neighbor goes oh, the love shack, and they both looked at each other with that stupid look on thier face, so i was like, "what"? They said, oh nothing and then she left the room, so me and the other dude are walking out to the balcony to grab a beer. And hes like, sorry man, we hear u and ur wife fucking all the time.... i had no clue what to say, i just said, im sorry man, il try to keep it down. He said, no dont. It gets my girl going and then she wants to fuck too. Apparently the neighbors made it a game to see who finished first. So he like dude u gotta pop quicker, cuz ur making me look bad, lol. I just thought it was funny, i was his best man when they got married. We are still good friends 10 yrs later