when you find that you don't kown if you love your boyfriend really,what to do

Welcome to myLot! The longer you stay with this boyfriend, the more you will hurt him, I think. What if he read what you wrote here and knew it was you who wrote it? How do you think he would feel? It is cruel to rely on someone when he thinks you care for him and you really don't. Trust me on this, if you don't know whether you love him or not, you DON'T love him. He is just convenient. You would not like it if a boyfriend used you! Well, you asked, and that is what I think.

if you have not yet committed to him anything then immediately make it clear that you are just his friend nothing apart from that. If you have committed then you did something you should have not done, but still it would b better to say him so as fast as you can to make him understand the situation and plan accordingly. Chances are if he truly loves you then either he can bombard a thousands of questions and after that he might go forever or if he is practical would be your friend but will talk very less. Accept it now and decide what you want to do.