enjoyed straightness for a minute

Something very weird happened today. I was quite happy about it at first so this will have a underlying braggy tone all along. Sitting in the train there was a bunch of girls on the row in front of me. On the way I change seats to get close to the window. One of the girl leaves early and while I look around I catch the 3rd girl face reflection. She was very pretty. Suddenly I felt an inner tension from my mouth to my stomach with projections of simply reaching her mouth. It was probably the most instense physical reaction I ever got in this entire existence. It lasted for many minutes. So much I started smiling like an idiot. Even more, glancing around I see a woman, beautiful blonde, with a skirt letting her legs fully visible from her thigh to her tiny open shoes fitting her cute feets. Now I can look at her like a fetish, impressions of playing with her legs without the usual 'forced heteronormative desire', it felt genuine, if I may say so. I got to the library with the sensation that not everything is lost, still focusing on girls face (sunny day in downtown town) with "good results", and spend a few hours reading this overwhelmingly wonderful book (totally worth a dead tree IMO). Unfortunately on my way back I reverted to my undefined-homoerotic state. With an added madness that when thinking about sex it somehow diffused to girls too. Was this also the reason I felt like I'd eat the girl in the "mirror" out ?