How to make my ex pursue me more ?

I know this sounds really immature.. but long story short, my boyfriend had hurt me several times in the past.. and he asked for several breaks because he felt that he doesn't love me as much.. and last break started a month and it's still going on.. though he texts me randomly, and tells his friends that he misses me and he finally appreciates me.. and he will come to me after he is done with his exams .. I still love him , and I would want him back.. but I don't want that once he comes to me I ll be like " sure , OK , lets get back " and everything's okay .. no I kinda wanna "torture" him a bit .. and make him pursue me more and actually put some effort to get me back .. what do you guys think I should tell him when he ll come and ask for another chance ? I don't wanna accept but in the same time I don't wanna say that I don't want him at all ..

Please help me :) thank you !