What Does it Mean When you get teased by someone who stares at you?

So im in High School and This Boy who has been staring at me for 3 years got some of his friends to Tease me about what i told him; i had written him a message on Facebook saying that; i thought he was good looking; a couple days later i find out that he was recieving text messages saying i really wanted him by me and saying all of these nasty things then two days later he blames me for tagging his car; which had my name written all over it in soap and was followed by ” I cant wait 4 us 2 be 2gether”; This is what i dont understand this guy knew the whole time that i wasnt texting him and knew that i didnt tag the car, but he still blamed me. Someone please help me out….What does this mean???