Hi, I'm a 26 y/o male who has a much younger girlfriend who's shockingly aroused and excited about feminizing and sissifying me. I just can't get my head around why a girl would want her bf to be her girly sissy? Is this typical of girls? Am i just lucky?

Not typical of genetic girls, so yes you are very fortunate. If you want to be a girly girl, then embrace it! If you desire to be owned then embrace it!

Ask me anything ... nothing is off limits!