I used to date a girl in high school who had very unusual legs. She was a bit on the thick side, but not fat ot our of shape. They looked smoth and normal when she was relaxed but with just a simple flex/tense, they would turn into like bodybuilder legs showing all kinds of definition. She said it grossed out most people who saw her do it but I thought it was HOT.
I thought it to be quite adorable that she was always very adamant about the 'fact' women do not poop o.O I don't know why she was, it wasn't like she was an extreme 'lady-like' girl. She just had certain hangups about people knowing certain things about her I guess.
When you're first in a relationship, almost everything they do could strike you as "cute" or "charming". As time wears on, tho, some of those things you used to find so adorable somehow turn really annoying. Things are exciting and new when the relationship is new. That's all there is to it.