JJ,
I've had some clients who were unable to achieve an orgasm no matter what I did. Hell, I even had a client who couldn't have one when he was with myself and my gf Haley (blonde bombshell and loves to fuck). I tried everything I knew, everything I had in my lil bag of tricks (figure of speech). It just happens and there's nothing anyone can do because its a mental block. Once you figure out what's going on in your head, then you can achieve your goal.
Shall I book you an hour on my couch?..........says the therapist.