Avoiding Hollywood Homely

In the comic I'm writing, I'd like my character to be attractive, but not be used to being approached by men. Frankly, I need to justify her not getting asked out without making her ugly. I have a few reasons:

1. She's 5'10'', skinny, and has a very flat chest

2. She doesn't really care about fashion and her clothing tends to not fit right

3. She gets really awkward around attractive men

4. Looks aloof because she's always thinking about something

5. She's a HUGE comic book nerd

Would these reasons all together work?

Some people got it, some people don't, your traits seem fine.

This sounds quite naturalistic.

It's more about personality, really. My best friend at school was very pretty and she was never asked out, because she was always focused on her grades and her studies, and never really attracted any attention from guys.