There's already mention of Hinata and Otonashi in the Ho Yay section on TV Tropes. It sums up everything very nicely:

# Angel Beats: Hinata and Otonashi. About once in every two episodes Hinata will say something (such as "I quite like you" or "I need you!") that makes him sound like he has a crush on Otonashi. Cue Otonashi asking "Are you..." ( Read more... )