Must be chemistry. When I find a man I really fancy, I see him as one to two feet taller than he really is (honestly. the world has a secret class of handsome giants. you should see them). But this happens as I see him for the first time, not after I've realised he's attractive. So there's something chemical/hormonal in it, and the body is aware of it before the conscious mind catches on. Its quite funny months later when it wears off and I find that they've kind of... shrunk.
If you believe the research of scientists, which Prof Robert Winston did a fantastic TV show about a few years ago, it is that nature has decided that your genes are a perfect match with which to produce strong, healthy offspring, and thus ensure the furthering of your genetic lines. Basically he was suggesting that we are so civilised now, and so "developed" that we tend to forget the very successful mechanisms that evolution has given us and are still very important in what we call "chemistry".
Pheromones, physical attributes, voice, smell, etc... will all play a part. I find that with my partner, I even love the way she smells... When we've had the weekend together, I almost find myself rolling around on the bed like a cat in a bed of catnip.
Those are all very physical attributes rather than mental ones... Nature doesn't really care about mental attributes that much since they aren't critical in breeding, but as we have learned to become more civilised, they have become important to us. We have developed into complex social beings rather than animals, so now we also find certain mental attributes attractive.
Most of the above is all very amateur psychology ! I'm fascinated by it, but my recall of the TV series and my lack of reading will no doubt make a professional gnash their teeth. I think the overall gist is correct though.
Don't overthink it. You've been lucky ! Go nuts ! With luck the mental connection will be as strong as the physical one.
Rock I love prof Robert Winston and physical attributes are our first cue in sexual attraction and very important. However if you don't have the mental connection these things don't tend to last and can be frustrating. You definitely need both. Also I've had crap sex with really attractive men I've fancied like mad but the guy I had things in common with, laughed with and loved deeply was the best sex ever despite not being physically as attractive
There's a bloke at work who smells lovely. Some months ago, I was struck by the sudden urge to drag him into a cupboard and shag him.... Since he's married, I kept it to myself, but it took me completely by surprise.
For me it is a case of turning on my mind and then the sex being mindblowing.
Had known DP, then just a friend, for a few years and then the way he said something to me one time flicked a switch and I fancied the pants off him after that. He had fancied me since we met and we got together.
The first time he touched me was electric and two years later it is still the same and we cannot keep our hands off each other.
We are very in tune mentally, get turned on by similar things and I can spend ages thinking about stuff he has said to me as well as the sex. You have to connect mentally I think as well as physically.