Why? Please help! 10pts?

Im a 15 year old straight guy and lately ive been getting trashed for wearing a purity ring.It says 1 Thes 4:3 on it. People say things like: gettin some pussy tonight and other rude things. I dont know how to respond to this? Why do people tease me for wearing a purity ring. Im not a faker its a true commitment between me and God that i stay pure til marriage. ANYWAY if you made sense out of this please help