Your opinion on this situation?? (please answer!!??)?

Okay, this is a really long story, so if youre a troll don't bother reading this. Last year in Home Ec, this one kid would talk to me relentlessly and call me gorgeous. I don't know why, because back in grade eight, I was known as the weird "wannabe" popular chick with the funky bob haircut and coordinating shoes and necklaces, and to top it all off, I wore gles. Anyways, this kid called me gorgeous for no apparent reason. Then, the semester change came and we were off to Video Production. I don't know why, but this cl made us closer and we became actual friends. His flirting advanced to almost creeper behaviour, and he would ask me out on a day to day basis. When the year was over and summer vacation had arrived, we were texting almost every night about serious topics, and he said he wanted to go out with me. I umed he was joking so I just said no. With the strart of our ninth grade year, we had obviously became much closer, and it didn't exactly take a rocket scientist to figure it out. As the year progressed, he kept asking me out, and finally (because admittedly I was pretty in love with him by this point,) I agreed to date him. We kept it a secret for the first couple of months (for reasons that Im not going to explain right now,) but recently we decided to tell everyone. The whole school knew, and we were a pretty cute couple, apparently. Now he is ignoring me, flirting with other girls, and hasn't yet kissed me, even though we've been dating for nearly five months. What's your opinion on why he is suddenly acting so weird, and why he won't kiss me??