Low self-esteem with opposite sex - help!

anon, reaaaaaally don't want this connected to my account. Almost every friendship group has one of those guys/girls that crushes hard very quickly/often/with almost anyone/for any reason, right? :rolleyes: Well, in mine, there's this guys who has liked all of the girls at one point, except for me. this wouldn't have bothered me, but the other day I dressed very different (out of my comfort zone too) which basically exposed my figure, and suddenly I was 'attractive'. this made me angry/upset because I don't wear anything but jeans and hoodies because I'm very body conscious, and I don't get any male attention- even from guys like this. Which makes me feel like this is why I've gotten nowhere at all romantically or sexually (and time is ticking and I am literally the last out of everyone I know which makes it feel like its worse) but I can't help not feeling 100% comfortable dressed in a way that's 'attractive'. I don't know how clear this is /: So, I guess what I'm asking is how to feel a bit more confident in myself I guess. I'm not looking for a boyfriend or to sleep with the whole city, I just want to feel more comfortable in myself so it could become a possibility. tl;dr: how can I feel more confident so guys aren't intimidating?

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