I used to be you in high school and let me just tell you, Summer is either gay or actually in love with you but scared because he's afraid of what other people would think if he made a move on you. It's your first experience with this sort of thing and it's always the first that's the harderest to get over but let me tell you: When you finally meet someone who isn't ashamed to like you for who you are and is proud to be with you, Summer will fade into the background. One day, you'll probably be embarrassed and wonder why you even liked him so much. I had a friend do this to me and I later found out that he really liked me but didn't want to get shit from his friends for liking the only brown girl in our whole group of friends. So trust me when I say, he's not taking you seriously for some superficial reason.