Messy situation with best friend... now benefits?

First of all friends don't make out. If you don't have feelings for him in the "boyfriend" aspect, then you should have never led him on by making out with him. It is most likely going to ruin your friendship because he obviously has strong feelings for you and it's going to be hard for him to "just be friends." You should have never led him on if you didn't have those types of feelings for him.