I have a great deal of respect for males who are willing to mingles their respective penises inside a vagina. I am also truly impressed when a heterosexual male doesn't mind another male's seminal fluids landing on his flesh.
I have done this with a friend and his GF. The feel of him cumming alongside my cock was awesome. Made me shoot a huge load in her as well. She loved it and couldn't get enough of us . Had many repeats.