I have been frequenting Sheris for a little over 2 years now. My situation is a little different than yours. I have been married to the same beautiful lady for 42 years. Until 2 years ago she was the only woman I had been with. We spent our 40th anniversary at Sheris to try something out of the box for us.
Now to answer your question, it made me a better lover and taught me a lot about the ways to please a woman. Am I more confident, yes. The experience has made me more comfortable as well. Most importantly it as shown me that I get way more pleasure when I focus on giving her the ultimate climax. It is cool when your partner tries to out do you.