If the only "symptom" you are seeing of PTSD is that he's selfish in bed..... OK, this REALLY gets my goat! If PTSD affects sexuality, its NOT a matter of "I'm ok if I get mine but I won't give you yours!" Uhm, nope, does NOT work that way! And if he does indeed have PTSD, you would have seen other symptoms by now as a REQUIREMENT of the disorder is that it has a significant impact on functioning. It sounds like he's using a "PTSD get out of jail free" card. So not cool. He's just being SELFISH!