I've stayed away from this series as I wasn't really interested in the sidewinder spinoff from one of my favourite series, but amazingly enough I enjoyed this one.
I think it is because of Kelly. I like Kelly, he's funny and when he decided he wanted to try with Nick he decided 100% and pushed forward. It helps that the two guys have known each other forever so there is none of the awkward getting to know you stage.
Nick and Kelly seem well suited