What can I do to make myself feel better and have a positive mind?

I'm a 15 year old guy and so the problem is I haven't been in my first relationship yet; nor I haven't kissed for the first time. I have some friends but since school gave Christmas vacation, nobody really cares about anyone. All the girls that I've liked always happens a reason for us to not be in the relationship. It sucks because they actually get to like me and nothing ever happens. I even went to one of the girls' house I liked and she didn't dare to come out. She was shy. I feel like **** and heartbroken... like I never got an opportunity until now. Whenever someone asks me in how many relationship I've been, what should I say? It feels embarrasing. And now I like a girl, and she likes some other guy... so seriously she won't go anywhere with me. Also this Christmas wasn't the best for me. I need help. Some advice that would just make me happy like I used to be other times cheering everyone up. And I have this bad luck that all the girls which I don't really admire as a girlfriend get to literally stalk me. I feel like I'm the only one like this. My guy friends laugh at this since they've had like tons of girlfriends. They are what girls call "players". Something that I'm truly not. Wish God would illuminate my mind and make me have an awesome life. Thanks for all of those who really help. God bless you all!