Last weekend my GF  invited her new colleague to our place. I expected him to be around our age. He was just 22. He felt shy and discomfort when I was present during "their" private moments. So my GF told me to sleep in the guest bedroom. Being a jealous pervert I just sat near the bedroom door. All I can hear was her moaning and "thud thud" bed sounds for the next 2 hrs. Woke up at midnight and the room was silent. So i dragged myself away. He left before I woke up. She told me that he had a huge cock. They tried for anal and it was too painful for her. So maybe next time.