I wrote what follows as a comment here. Upon reflection, I wish I'd had opportunity to proffer the same to my own son at the same point of growth in his life. Daughter wasn't having any in her time, and she turned out well enough, so grain of salt and all that.
"Let me try a different tack on this and confirm for you “Jay” that you are indeed “all grown up”. Next comes the really hard part, filling out into a fully developed man as well. You’ve probably heard the aphorism’s, having the tools but not knowing what to do with them and the like.
Dbltap, Dr. T and Mike of the Dueling Pistols all offer excellent advice. I would specifically suggest that you spend the next two years concentrating on four activities; establishing your professional credentials, creating your personalised living space, maximising your physiological development and, finally, becoming as well above average as you are capable of in some mixed gender activity (dancing being the classic choice, but music/singing is a good alternative if you have the basic qualities required). Most importantly of all, stop looking for “female action” - no offense stud, but you really don’t know what to do with it yet or, more importantly, to protect yourself from what else often travels with it. Not just the usual Tab “A” into Slot “B” and cooties worries, serious as they are, but the diversion of your efforts away from developing you and toward supporting her. It sounds a little cold-hearted at times, but the only person in this entire universe you absolutely have to live with is yourself. The more comfortable you are with being him, the more likely you will be attractive to women.
A final note of encouragement; towards the later portion of this period, you’ll notice different attempts by women to attract your attention to them. Enjoy it for what it is, but don’t go crazy - there are any number of “right” women for you depending upon what stage of life you are at. Take the time to check out which of the women actually available to you (sadly, movie-starlet-of-your-choice probably isn’t going to be one of them. I know. Man Up, as the lady advises.) and also seems to be headed the same direction you want to go. I have confidence you’ll be able to take things from there with no more then the usual problems that come with the complete and utter destruction of the life you’ve worked so hard to establish all these years.
So, get a job and get good at it, make your own place to live, join a gym and try out a wide variety of “guy things” and, very important, learn an activity that women want to interact with you at. You might want to consider investing in some subtle crowd management skills toward the end too.
Oh, and resist the whole Casanova thing - it has it’s own down side ... you don’t even want to know, trust me."
More sincere words were never authored; their veracity is pending independent confirmation.
YMMV and all that.