Just cant do this anymore....need help?

Im 17 and have never had a boyfriend..and i know that sounds pathetic...bt i did go to an all girls scholl until i was 16. This has ruined my life..i now have no confidence around guys and have no idea how to have a conversation with them...im in love with a guy who i only see once a week...the trouble was he got my hopes up beacsue he gave me signs that he liked me and now i feel he has just given up and moved on...i feel so stupid that i have never been in a relationship with anyone and jealousy is ruining my life..i feel inferior to everyone who is and has been in a relationship...at the end of the day all i want out of my life is to find someone whose loves me back...am just at the point where my hearrt has been shattered into so many pieces that i just dont want to live any more, ive had enough of life and all the **** and pain that goes with it...i know people are going to tell me that what **** they're been through and that im being over dramatic...but its the way i feel and i cant do this alone anymore...plz can people anwser this question nicely beacsue its serious ...i mean it when i say ive got to the point of desperation...i really cant do this anymore..