Motivations?

As I was reading about the set-up meeting between Gatsby and Daisy, it never really crossed my mind what Nicks true intentions or motivations were. I guess one of the reasons I didn't find this peculiar is due to Nick's fascination with Gatsby. Nick is so intrigued with Gatsby that he has allowed Gatsby to pretty much take over his life. This is rather obvious throughout the book,but one that is mentioned prior the tea party is dealing with Nick's lawn. Gatsby is so worried about impressing Daisy that he has his lawn guy take care of Nick's as well. My impression is that Nick didn't really want this to happen but he allowed it to please Mr. Gatsby. This is just one example of the lengths Nick will go to in order to be a part of Gatsby's life. I personally don't think Nick realized that him setting up this meeting would have a chance of leading to infidelity. He is so obsessed with pleasing Gatsby that he has put aside or almost forgot about his so called morals and character. I may be entirely missing something from the text, but what I get from it is, at this point Nick will do anything to keep Gatsby in his life. Even if it goes against things which he supposedly prides himself on.