Spoiled myself.

[OrphanPip]

Marvin, I think you're over thinking this. What you would probably benefit from is talking to your friend about maybe trying different things and seeing if there are ways to work on improving the experience between you. It is probably largely a stress thing that's making it difficult for you to come, and probably anxiety too. Have you tried pleasuring yourself until you are close to ejaculating then allowing your friend to try and get you off, I did some research and this is a standard form of sex therapy for couples to work on issues of delayed ejaculation.