With me it just started with thinking about the GFs, the wives. I really missed out back in my younger days, not thinking of sucking cock till I was in my late 30's. I just started to think of how natural is for most women to suck their men's cocks. I look at young couples, and older couples today and just look at the woman and think of her sucking off her man. Then I think of, YEAH, why wouldn't a guy like doing it as well. That got me thinking of like being a guy's GF, sucking off my horny man. So, I LOVE to check out these couples young and old, and I think of what it would be like sucking him off, or having him fucking me like his girl.