Why can't I org**m from handjobs?

I am a 17 year old boy, and me and my girlfriend have been dating for almost 7 months now. We aren't completely sexually active, but we both mas*urba*e each other. I can please her just fine, but I cannot achieve an ejaculation. I've had this problem all my life, and its very frustrating. In my spare time I mas*urba*e, and can c*m just fine, but I've had 3 different girlfriends (1 fully sexually active w/), and none have made me c*m through hand jobs or blow jobs ever, only sex has worked for me. What is wrong with me? I'm too ashamed of myself to seek professional help, and I don't have the money. I feel like its probably a psychological problem, but I don't know how to concentrate my mind on anything but the thought of cumming. Please help me, I am in great need. This is really, truly depressing for me and my girlfriend.

don't worry about it.

you know how to do it on your own, so it's probably a technique issue on her part.
try showing her what works for you or providing directions for her.
It probably is a psychological block based on pressure in the moment, so just try to relax.
don't make it a bigger issue than it is. that will put more stress on you.

try this:
tell her you want to do this and ask her to be open to listening to what feels best for you.
do the same for her. let her tell you what she likes the best.
chances are, you could use some direction yourself.

most of all, relax.

Its seems as tho you dont want to let your guard down and let someone else make you c*m, you can do it yourself thru masterbation and sex becos you are in control and doing it, but when it comes to sitting back and letting your girlfriend take control you find it difficult.

Maybe try and relax, let your guard down, I know easier said than done but the more you work at it the easier it becomes. And when you are getting heated up keep looking at your girlfriend and what she is doing, keep looking at her turning you on more and more and think of how great she is going to feel when you c*m, keep that in mind and dont think sooooooo much whilst this is going on, just let yourself free and enjoy it becos the more you think about it the more it wont happen as the brain is the biggest sexual organ of them all!

My husband is very similar. He was uncomfortable with me giving him handjobs becasue he wasn't able to oragasim. But, I didn't give up. We later found that this was because we weren't using anything to help... maybe you should try a blind fold or some lubrication. Maybe the problem is that it doesn't feel the same. Also, if you're not comfortable, maybe not seeing her do it will make you feel more at ease. Give it a try.... you never know