If you feel uneasy, then something is wrong. I don't feel bad if I have two orgasms with someone I don't think is attractive (although there was one man who was both hideously ugly AND amazing at oral so I faked it to avoid the indignity of actually cumming.) However, it sounds like he is pushing a boundary by telling you that he considers you a "good friend."

You don't have to justify anything to yourself - if you want to rein things in, then do it. You only have to do what you want to do!

I've came with ugly men and i'm a very picky girl when it comes to men in my private life so It's the stimulation not the looks. Looks help get the mental stimulation going but sometimes all you need is physical stimulation. Genuine friendships are normal with regular clients. We get to know each other like normal folk it's not odd. If you feel you want to keep friendship at arms legnths because it makes you feel uncomfortable you can just.. not see the dude again if that's what you want

fuck buddy!

I'm jealous of all you girls who can orgasm with clients regularly.  I take a long time in my personal life and with clients I'm just thinking about them/thinking about what I'm "supposed" to do to be sexy lol.  I can count the number of clients who have given me an orgasm in the past year on one hand...I did have one guy who was so ugly, short, a total nerd (I'm a nerd too but he was just so the opposite of my type and literally talked about Disney World for the entire hour) and yet he was the. best. oral. EVERRRR.  Like, even my current boyfriend who is a 6'2 personal trainer and loves to give oral is only #2 compared to this little shrimpy client!  And I felt so weird getting turned on just at the thought of him arriving for his appointment.  But it was just a physical thing like Pavlov's dogs, there was nothing going on emotionally or chemistry-wise.  He just had the tongue of a god.  There's nothing wrong with that, enjoy it when you see him and don't give it much thought otherwise!  Consider it a perk of the job.