I am in my early 50s and I have a girlfriend that is 15 years younger than I am. I am not sure but I feel like I am not producing much needed cells to reproduce. My doctor told me that both me and my girlfriend are okay. I just find it difficult sometimes to release. It may take me a while. Sometimes, I just stop because I can see my girlfriend is kinda bored. What combination would you best recommend to me? I still work out and take peptides.