Please dont feel pathetic. I completely get what you are feeling though! I was 17 and hadn't been kissed or been in a relationship and it does feel horrid. But now I'm nearly 18 and I have a boyfriend, and I completely did not expect it at all. You can NEVER see what is coming, so don't lose hope. I'm sure you've heard it many times before but you do NOT need another person to make you complete. Don't base your whole validity and worth on the opinions of others. You are an amazing person. I may not know you, but I honestly believe everyone is beautiful and amazing in their own ways, and I am certain that you aren't an exception. I can tell you, it IS wonderful to have a special someone, and they can make you feel better about yourself, but it is not everything by any means. And honestly, you are not at all alone in being 17 and never kissed or been in a relationship- I know many people who are the same. It is not weird at all, and it does not mean something is wrong with you. I am sure there is someone out there who will love and appreciate you for you. You will never know when that will happen, but when the time comes, it will have been worth the wait.
Stay positive lovely. It's hard, but you've got to try :)