Just some suggestions for your consideration. Lots of, and really long, foreplay: fondling, kissing, touching, intimate words. The longer you stay aroused but not directly engaged in early intercourse, you may find your need for release morph into a peaceful euphoria. When you do enter, do just that. Then come out. Tease. When you move, move slowly, at least for the time being. Fast for a few seconds. Stop, then slow. Stop while inside to kiss, touch, even talk. Look into her eyes. The longer you do this, and I do mean long, the better the chances of extended intercourse. If you can stop before the point of no return do so, and, yes, wait, as demanding as that may be, before you continue. OR You might also consider a quick first act, for a really long second one, and tell your partner that is what you are going to do. Plan it with her. She might understand if you explain she drives you nuts with her attractiveness. Spend time developing your relationship with the lady. If you are so hot, a second act is likely. Don’t know where you live, but a medically trained therapist is a possible source of help if nothing else does. But the male response can be trained. Relax. Plan. Communicate. Orgasm is the explosive finale to an exciting many act performance. You can’t really have an end without a beginning and a middle! And, stop smoking, entirely. Forever.