Need to vent! I am so disgusted...

I am so pissed off right now. My partner is away until next wednesday and I thought I would ask my friend if she would stay with me a few nights because I freak out when I'm home alone at night. I was kind enough to let her have a friend over while she was having a few drinks earlier on as I can't drink because I am pregnant. And the guy ended up staying over and I said they could take my bed and I would sleep in the spare room we have as long as there's no funny business. And guess what? After a long time of asking them politely to turn down music so I could sleep I finally told them to just turn it off and then I went to sleep. Then I woke up around 4ish this morning because I could hear them talking. Then I could hear the dude she invited.. he was moaning and there were squeaking noises. They were fucking in my bed! They promised there would be no funny business and i am so fucking disgusted. My friend was going to be moving into my house because she has nowhere else to stay here. She lives 45 minutes away. And I wouldnt care if she had sex with him in the house when she was living here as long as it was in her own bed and her own room! Im so disgusted I don't want her moving in anymore. Thats so disrepectful. They know I heard them too because i opened the door and yelled out I CAN HEAR YOU GUYS AND IM NOT FUCKING IMPRESSED and I slammed the door. How fucking rude and disgusting! UGH

Sorry for the long rant. I just needed to get that out.