As shocking as it may sound, it is possible to convey that a character is interested in sex and relationships without physically stripping her naked for us to look at. It happens with dudes all the time.
Tina Fey recently said that she won't talk crap about her own body in front of her daughters because she doesn't want to set a bad example. I wonder if my mom did the same thing, but now that I've grown up, she no longer has to maintain the illusion.
Since the age of 12, I had been taught to burrito myself in a beach towel at all swimsuit-wearing times or wear an oversized T-shirt to protect the delicate fat-phobic sensitivities of those around me.
Slowly, I began to feel uncomfortable eating junk around Nick. He would be slamming down protein shakes, growing bigger and stronger, while I remained small and soft and unsure of what to do with this vast difference in body type.