Some guys are more jealous then others, but if you want him to make first step in your realtionship, then just make him jealous!
Its very easy, just read these steps:
1) Don't tell him that he is the most beautiful guy in the world, the most perfect and the most nice! Don't do that because then he will feel too proud of himself and he knows that he has you at his feet! tell him that he is cute but you have already seen better! This will make him panik a little!
2) Look for the cute guys on the street and talk about them with him! For exemple, when a cute guy passes by then say " Damnnnn what a nice ass! Don't you think so?? He is so sexy", and your boy will start to panik even more!
3) If you want to flirt with a guy to make him jealous, then don't choose someone more beautiful than him, choose someone more ugly! If he sees that the guy with who you are flirting is more beautiful then him,he will give up, he won't fight for you anymore because he knows that the other guy is better than him! But if he sees that the guy is more ugly, he won't understand what you find in the other guy and not in him, and he will try to find out! It can happen that your boy will laugh when he sees that you flirt with someone more ugly then him! In that case only tell him that you are not interested by the beauty of someone, but by their heart! When someone is 70 years old, it won't be beautiful anymore, but if he has good heart, then he will always have it! Only then your boy will realise that he made a dumb-ass of himself and he will see your good heart!
4) Don't stop talking with other guys, or when you go to a party dance with someone else too, not only with your boy! This will make you look independent, and he will realise that he must take good care of you if he wants to keep you!
If you will do all this then you can be sure that your boy will be jealous, and he will do everything not to lose you!