oops he did it again

so life had been going great Steve walked with me to my class today which was in the complete opposite direction of his class and well he was late too class cause he walked me to my class, and when he gave me a goodbye hug i couldn't stop smiling and giggling..but  i did the giggling and smiling after i was in class so he wouldn't think i was a weirdo:) but then at lunch he told my friend that he liked me but cause of the age difference he doesn't know.. so basically its a no. my heart dropped when she told me. i held in all i could until 5th when i asked to leave to the bathroom. thank goodness no one was in there because i started crying. why is it that when i start to fall for a guy they don't like me or lose complete interest in me. and idk I'm fed up with it. i just want someone who will actually like me and care about me.