microcrush

n. a "small" crush. Usually the crush is caused by a specific trait or situation that is outweighed by some other negative element, which keeps it from developing into a full crush.

1. Jan thinks he is charming, but only has a microcrush because she knows he is married.

2. Yeah, she is kind of annoying, but how could you not have a mircocrush? She is just so damn cute.