Help me get a boyfriend...?

well, i'm going to be a junior in high school and i've been single forever. the last time i've had a boyfriend was the beginning of my freshman year. what happpened?! i mean a few guys had liked me here and there, but none that i've ever liked through this period of time. now i want a boyfriend and i have a huge crush on this guy. he's going to be a senior, and we talk, and we once in a while text each other, and he always smiles when we talk. but yet i think he likes my friend, because she's more friends with him than i am. but then at times i think he likes me. and i also liked him at the beginning of my sophmore year, and we went to our homecoming dance together. but then me liking him wore off and now at the end i like him again. help me! telll me what to do! :D