My first attemt and over sereral years with a woman , who at first was new to it. Cuased me pain with here teeth etc. but we worked through it. Still could not cum. Now I am with a woman who has the skill ( I think ) and is use to guys cumming and is hurt when I do not. I am trying to tell here not to get upset and she is responding. I still find myself at times losing an erection when she goes down on me ( psychological for me I think not in it is bad or dirty etc ) and still not able to cum despite she causes the best feeling I have had geeting a BJ.

Thanks to those that replied.