well, I have listed many ways to annoy someone you don't like. it is filled with examples,comebacks and sarcasm and it will help you.. if not, some fun won't be bad.
Can I give you a piece of advice?
Have you ever seen a movie or read a book or even listened to a song where making someone jealous worked in anyone's favour? My advice...don't jump to jealousy, it never goes the way you want it to.