Boy trouble!!!!!!!!!!!!!!!!!!?

ok so this is a long story but i think you should know all the details well this guy and i have been friends for like three years and he asked me to this dance well then at the dance we hung out and had a really good time then we went to the gym where they were having the dance and it was dark but he grabbed my hand and put our hands behind the bleachers and then after that he started ignoring me and not wanting to talk or anything so then he told me he didn't want to go out with me anymore and he left the next day he told me that he enjoyed going out with me and that was it i want to get over him how do i and what do you think his reason was the break up with me