Hey girl -
I found out I had it last year, when I was 19 too. Obviously, I'm 20, and it was just as scary for me as it is for you now. However, it will get better. If it helps, I've had a quite a few disclosures since then, and I haven't had a really negative one at all, and I have had sex since then. Not to say the negative ones don't exist, but they are not the end all be all, and they are also usually a product of societal stigma.
You've definitely come to the right place. And about not valuing yourself and giving yourself to all the wrong people -- I understand. I got it from a 42-year old married man who took advantage of me, to put it frankly. You are not alone.
It's scary now, but the most important thing to remember that really, this is a skin-condition. I've had eczema all my life, and that's what I like to compare herpes to -- a permanent skin condition. It's just germs, the only thing different is HSV1 oral has a euphemism, and HSV 1 & 2 genital don't -- but it's caused by the same virus hun. As far as relationships, a friend told me something I like -- this will scare any AVERAGE JOE that's not educated... but you're better than an average joe and you deserve more (just in the course of life).
And, WCSDancer2010 is awesome, she helped me, she'll help you, she helps all of us. And I agree with Mmissouri and PositivelyBeautiful as well.
I'm more than willing to be a text buddy if you'd like, especially since we're so close in age.
Life threw you a curve ball, but trust, this is life (there will be other curveballs, but there will also be home runs!). and things could be MUCH worse. You will be alright... and even fantastic, with time.
Sending love and strength your way! <3