I normally don't think about sex at all, and being on Subutex (Buperenorphine) maintenance completely kills my sex drive normally due to the fact that it makes it very hard to achieve a quality orgasm - but MXE - even during semi - peak effects, completely reverses that problem for me. My Ex-GF used to take Vyvannse 50mgs daily, Partied on MPA on the Weekends, and occasionally did legit Speed. Her on Speed and me on MXE was an all out fuck fest.
This is something I would feel very uncomfortable about saying, or talking about in person - because due to my upbringing, sex makes me feel very uncomfortable and guilty sometimes, even with a woman I love and have been with many times - but in my experiences, since MXE, at least for me almost always raises my Blood Pressure pretty considerably, I actually feel like I not only could have amazing Orgasms, and complete control of how long I wanted to last - but also, my Ex-GF even openly admitted it made my part seem bigger than normal, and way more fun than her compared to Sex on Subutex.
Just my experience -I'll just leave it at that. Some MXE doesn't have the added "I want to fuck" effect - but the stuff with a real, speedier edge to it FOR SURE made me a straight pervert, and that is not how I generally am at ALL. I'm more of a Thinker than a Horndog. End of Story - Meowfish Out