crushed

It's with no pride whatsoever that I can say the following: the times in my life when a woman has told me she had a crush on me, it took me by complete surprise.

"Me? Seriously?" is usually followed by a thoroughly baffled "Why?"

Significantly, seldom has the woman used the present tense. The crush is always in the past. As in "I used to have a crush on you." I can't help but mentally complete their sentence.

...but then you opened your mouth and ruined it.

What's the "used to" about, besides giving me a complex? As always, I have my thoughts, but I want to hear yours first.