Witnessing to atheist at work

My 2nd job I work with an atheist in a surveillance room. He will not read a book, a tract, or a booklet defending Christianity. I have had a few talks with him but mostly he is closed so the only thing I can do is love him. I have agreed not to offend him by playing my Christian hard rock music and he has agreed to the same by playing neutral music. I guess in this situation I can only love him to be my witness. It's as Bobby Conway says I am the fifth gospel. Contrary to what my critics may claim I am not against friendship and lifestyle evangelism. Today was a better day (so far) and lord willing he will come over one day. Pray for him his name is Ryan.