I've seen the movie and honestly, at first I've been curious with what Cris was up to, why did he do such things. i deliberately went to a book store to find the book and read it. There's a line he wrote on a book he was reading that attracts me:

“HAPPINESS ONLY REAL WHEN SHARED.”

I'm no loner, or whatever people thought negatively about him, and the phrase was rather obvious. But this phrase had been written with feeling and deep contemplation. That might be the reason why it struck me so much. It is so hard to explain, but though the book was vague, I like it. I like Cris' point of view in life in some way.