Hello everyone. I am a 70 year old male who has had ED problems for about 5 years now. I have used viagra, but so far the best has been cialis. I also get testosterone shots every two weeks. Lately I have been having problems staying hard when entering my wife during intercourse. She can get me hard but most of the time, shortly after entering her I either go simi-limp or completely limp without ejaculation. If I watch porn movies with her I can get a hard-on that will last through intercourse. I might add that I do love my wife very much and I certainly do not want this problem. I am thinking about increasing my dose of cialis or if that does not work, getting penile injections. I might also add that I am bisexual, have been with men before but now am trying to stay manogamus. Any inputs appreciated.