I'm 18 and I've never had a girlfriend, not even close, so I know exactly how you feel, especially since every single one of my friends has had a relationship at one time or another. But a quote I often think of is "Be good and be lonely" - it sounds quite hopeless, but I take it as quite ironic, and that sometimes the worthiest people of relationships don't have one until later. Like you, I would probably never go out with any girl immediately around me, they are either too immature, uninteresting, distant, don't see them often enough, or simply a true sense of attraction isn't there. The most frustrating feeling I have is that even those who aren't particularly attractive to the opposite sex still somehow seem to "get" a girlfriend as if it is just a normal part of life, whereas I seem totally incapable, even though I have many close female friendships. However, as long as you don't descend into the stage of "I'll never have a gf/bf" then positivity will ensure a partner comes along, some time... However, if you don't even come close like me then the mind programs itself to think that you will never have a partner, and that this sadness is normality - imagining myself with a girlfriend would be utterly amazing and unbelievable, like winning the lottery, but I find the best way to cope is to remember you have an equal potential chance of attracting the opposite sex than anyone else, and that there is no irrational reason why you can't.