For the past few years I have been on anti-anxiety medication that makes it much more difficult to ejaculate. Basically, it is only my hand that can reliably get me to the promised land. The upside to this is that I can fuck for hours, but this gets a bit old, even for the women, who are pretty obsessed with having the power to make you cum.
In the end, I have learned that they won't be satisfied until I do - so I have started to jerk myself off once they've gotten off. I lie next to them and they pet my chest and arm while I yank myself off. There's actually something very intimate about this - I get very vulnerable even as they're calmly recovering from their own orgasm. Then as I build toward the orgasm, they are relaxed as my body gets tenser and tenser and I thrust up into my hand, jacking so fast they can't believe it doesn't hurt!
Once I get that feeling that I'm going to make it 'over the hill' I can really relax and pound away. I learned a while back from an acupuncturist how to cum without ejaculating, which is nice because it prevents a mess, but when there is a woman next to me I like to cum all over my chest and belly both for the show of it-and because I don't want them to think I'm faking it!
Recently I broke up with my girlfriend because other aspects of the relationship were not going well. But we are still friends and I wish she would come over and jerk off with me right now! I also would like to propose it to another woman friend who is single.