If you look at the two dudes, they seem to look very similar. Could be a situation of twins or brothers. I've been in situations like this where you want to join in, but you're afraid of competing with the girl's main man, and you can't get out of your head how your woman/wife would react if she knew (phone call). But I agree with the previous comments--neither guy seems to be getting into it. The guy in the back is also watching TV and smoking while fucking her. What could have been a super-hot, situation wise, is totally disarmed by the lack of enthusiasm. Girl is amazing.