Sentence:  It comes to you that probably he did feel that way to <WSD>let</WSD> you use him like you did when you could n't have Gratt Shafer ; that he must have since he was there like the radio for you to turn on or snap off when you got tired of him , that other guy . 
Meaning of the word marked with <WSD> tags:  make it possible through a specific action or lack of action for something to happen