Really want a girlfriend but very insecure

I know people will say your only 17 but i feel like such a loser. I am shy and lack self-confidence as I used to get bullied alot for being fat (ive lost like 4 stone), stinking (my hygiene is now excellent) and for being ugly (I am like a swan from puberty thank god haha). Well basically my Mum set me up with her friends daughter as she was older and ive always wanted a 'mature' relationship we were seeing for a month i would buy her flowers, take her out, shower her with complimets but she cheated on me and lied to me and made out she was leaving me for her 'career'. Ever since this i havent been myself, I had finally got over the bullying but now my confidence is at an all time low and I feel as if im not good enough for anyone. I worry about my appearance now more than ever and I am worried about my penis size, I researched it and Im average so I guess its not really a problem and my doctor said she thought it was just one of the ways im expressing my low self-esteem. I still worry about it but I guess average means most guys are the same? Yes there's guys bigger than me but I guess that's life, I'm just scared of what girls will think. I have been excesively thinking about how Ive never been kissed and im a virgin. I feel pathetic, I go out and socialise get told by girls they find me attractive, hold hands ansd things when we are talking but I cant pluck up the guts to ever try and kiss someone. All my friends have girlfriends or are out getting girls and I feel like a weirdo. I want a girlfriend for emotional stuff not for physical. I was speaking to this girl I like lastnight and she said she knew i wasnt gay (one of my friends was telling her i was) but i come across as camp (which i dont get im not feminine I dress very well but apart from that im all into football and normal guy stuff) and she said well how would i know i wasnt gay if i hadnt been with a girl. I dont know what to do im such a loser.

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