As described in this post - https://www.reddit.com/r/NSFWIAMA/comments/6r4cpo/my_mom_is_dating_a_friend_of_mine_from_college/ My friend and mom are dating. This is an audio of what I could hear in my room, that's right next to mom's. They thought I'd been long asleep. Fair warning, not a very good quality audio since I could only hear it faintly in my room and used my shitty android phone to record. Try using headphones and turning the volume to the max to hear.