Their body language in that video is not one of being into each other. Clearly though, they like each other; they get along.
Look at they way he is sitting with his arms folded and there is such a gap between them. They seem friendly but I would not go so far as to say they really like each other. Even when they were on the stage, the were so awkward and leaning away from each other.
Gawd with that music being so loud over their voices. I had to turn it off.