Motivation for a teenage girl?

So, I'm a teenager with braces & pimples and there's more to my stomach than my chest or butt. My best friend has clear skin, perfect teeth, & the perfect figure. Well, my boyfriend liked her before me. And also our other friend's boyfriend. The other day we met two guys from our neighborhood. She has a boyfriend, I don't. We hung out with them, and they're really sweet, really cute, and really funny. But, they like her. Which makes my boyfriend, another girl's boyfriend, her obsessed ex, her boyfriend, and I can think of at least 7 other guys who are in freaking love with her. He flirted with her, she flirted back, knowing that I liked him, and she had a boyfriend. Later she asked him what he thought of me, and he said "Ehh, she's okay in a way." Which made me feel horrible. THEN, the other guy, who was sweet, funny, and cute too, started doing the same thing. It seems like she's a golden seashell, and I'm just a grain of dirty sand on the beach.. Help me not feel so bad?