Is it normal that i'm straight yet need to imagine other men with gf?
I have always been straight. I'm 28 years old now, and have been with my girl for 3 1/2 years. Before her, I never thought of another man sexually. Always women. With her, I've felt arousal for men, but never enjoyed fantasizing about them. Today, something hit me: whenever I see men, I get turned on, but when I think of a girl, then I get super turned on and its really fulfilling, but only after I've seen the guy. I tried the fantasy in bed with her today, and I think my theory fits - that when I picture her blowing a guy while I'm doing her, it really turns me on, but if I were to do anything personally with that particular guy, it would totally turn me off, I think. It's really uncomfortable though, because on the street, guys get me going, but never to get me off. They only get me going in the direction of girls, and that gets really hot. It's hard to live my day with my mind going like this. So I imagine an MMF threesome, which is kind of annoying, because I really don't want the dude in the picture - never did, but now it's kinda hot, since it's kinda like I'm in a sperm competition with him (and btw, I always come out the winner ;-) ).
So is it normal for a traditionally hetero guy to be going through this (I understand there are many shades of bi)? Have other hetero people gone through this too? In relationship, it's MMF, but when single - girls, girls, girls?