When I have sex/masturbate I usually ejaculate, but for about the last 8 months I have not been able to feel it happen. Or basically I have nor orgasm. I just stop when I notice that I've ejaculated. This started after I had a really rough break up with my girlfriend so I just figured that it was stress related, but that was almost 9 months ago now.
I've tried waiting a week and two weeks between sex sessions to see if that had any effect, but there was no change. Any thoughts?

It could be that whatever technique doesn't work for you. If you don't feel anything at all, then maybe you should talk to a doctor or a sex therapist, but before you do that you should try masturbating differently. Here is a link to a website that will give you many techniques.

Male Masturbation Techniques

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Thanks:D

Maybe a certain medication or a medical prob. Call a DR.

Have you ever used one of those "Penis Enlargement" treatments? Some products are supposed to numb the area temporarily but they are not always safe