Gay_goat (interesting nick there),

Your problem is hysterically ludicrous. Mate, you may have misunderstood the old man there. He was talking about seeing the things, not hearing. I would say let the matter rest at grave in peace rather than making the situation awkward with the apology.

In the mean time, do you have the basement in your "big" house? If you do, why don't you change a corner of it as your temporary bed room for few months (make sure the basement has tons of stuffs around; else the echoes can make the situation worse). You can enjoy your love-making moments there when your in-laws are asleep at second story. Just my one cent...hope that helps. :-)

And, thanks for making my mundane morning.