She gets off with clitoral stimulation, but only when she thinks about threesomes and uses a vibrator on her clit.
She thinks he is not into threesomes now because she can't orgasm with him, so she assumes when she can orgasm with him, he would be more comfortable sharing her. Since I havent talked to him I don't know if he is completely against it or just not up for it at the moment. Being a guy myself I would assume that he can be convinced to at least try a FFM threesome when he got more secure.
He knows about her dissatisfaction and her fantasies.
They want to spice things up and she is very much into fantasies(roleplaying, dirty talk, rougher sex), but apparently he isn't good at that stuff. Then the other day they tried the rougher sex that she loves in her fantasies, but then she had flashbacks to her abuses and started to cry. But she thinks that was only because they were high, but obviously he isn't to fond of the rougher sex idea anymore.
Also, he would probably freak out if he finds out she it telling me all this she said he doesn't even want me to know that she wants to have a threesome with the three of us.
Thing is, while my relationship with her is very open and we talk about all these things, my relationship with him is very brother-like, we know each other since we're kids and talk about everything but sex.