Just had sex with my partner again, we were kissing a bit and she said ' put it in' so I obliged. We were going slow but deep, and after a few pleasurable minutes I suddenly ejaculated. I was disappointed because I want to conserve my semen. I think maybe I'm going into hard and straining a bit when maybe I should relax more and be looser and limpet about it. I have no problem with erections, just the fact that the sensation is so pleasurable I ejaculate quicker than I'd like, when in fact I'd rather not ejaculate at all.
Any tips ?