I have to agree with vmvnpv, " It's never easy breakin up". Make a list of everything you don't like about the relationship and at the right time, tell him that although you care about, that you don't have the same feelings and it's best to each go your own way. Tell him that you love him, but that you are not in love with him and offer him your friendship (which I doubt he will accept, but he will get the message that the relationship if just not functioning). This is not easy, but the more you prolong it, the harder it's going to be. Just tell him you need your space.....good luck
It's never easy breaking up but only you can make that decision and stick to it. If you need or want to get out the sooner you do it the better. Then surround yourself with friends who will keep reminding you of the good decision you made. Maybe even date a few guys to remind you of how much happier you are not being in this relationship.