The writer Anais Nin was involved, staying at her diaries, in a triangle with a couple, Henry and June. The two members of this couple were married and in love with each other. She was in love with both of them, noticing their affliction, their character and their qualities while making love with both of them. I suggest you to try this kind of triangle once in your life, not the random kind of triangle, but one which amuses your consciousness and your senses in a melting pot of affectivity and mindfulness. This will enrich your life and will not affect your sexual power.