I don't know if it burns out, or the euphoria just isn't there any longer. Your admiration or love or whatever you want to call it changes. It either changes for the better or the worse. Some people can't get enough of that your fork affect and move onto the next person. Or grows into something real, better.
When you first meet someone there negative traits can be viewed as quirky, adorable. After six months annoying irritating You get the picture.

Spell check sucks .. I ment euphoric

I think we subconsciously desire one thing maybe, but then when we logically realize how that person is, maybe it burns out?

I have never been in a relationship whereby infatuation didn't burn out. Before now I hadn't even considered a wish list of admirable traits to look for in my chosen one, it makes perfect sense to me that I should have done, but it is to little to late.

If I had my time over again I definitely would have done things differently, and I'm certain I would have been living happily ever after. Relationships are very complex things, particularly so if you are ill prepared for them. I stand guilty as charged, and I would be alone?

I would have to say infatuation does burn out after awhile. Not necessarily for the bad, but as someone else said, its just not euphoric any longer. Sometime i think it grows into something more. Like love.

The only relationship that I took seriously, and the only girlfriend I truly loved, was the one I was never infatuated with. We were friends for a long time, liked each other secretly on and off, and now we've been together since Decemember 31 2013. I used to be annoyed at her negative traits, when I first met her, but now I understand her more, and I love everything about her. We had a few months where she started taking advantage of my patience, but I threatened to leave her, and she went back to being an awesome girlfriend.--That was a long time ago.

OldCodger, maybe I'm just being overly romantic but I don't think it's ever too late. It probably just gets more difficult.