Is this weird to you?

i have a good friend who i have known for over a decade. she is talking to a guy and is getting to the point where sex is whats on the agenda. he asked her if she has ever done anything with a girl and she said only kiss and suck on the girls boobs...he then asks for a pic of her doing so. she askes me if i will be the girl in the pic. i am fine with that since i am a bit of an exhibitionist. it just seems to me that he is aiming for a 3some with her. and he has mentioned having me present during them hooking up. do you think he is wanting her but me to have sex with him also?