I dont think im pretty enough!!!!!!! PLEASE ANSWER!!!!!!!! it will only take a moment!!!!?

i am 16 and i feel so ugly. i have naturally curly brown hair and i am quite tall. i am the correct weight for my height and i feel so ugly. i haven't had a boyfriend in 2 years and i don't know if i repel them because i am so ugly. im not shy around guys but i am shy when they are shy with me if that makes sense at all. i don't feel loved by the lads i do go out with and i feel ugly. i don't know what to do to make me look better. does anyone have any ideas on how i can look pretty to attract guys. all i do is sit around eating watching telly because i have given up and i only comfort eat because i don't know what to do anymore. im not wanting to get fat but my Logic is if they see you that way then you may as well be that way. if there is any advise anyone can give me i will really appreciate it. thank you xx xxx