[........................................... He doesn't know how to react to this. This poor weirdo hasn't been hit by any cupid's arrows (yet) and so he's more perplexed about what's going on. More importantly, why Keith is suddenly so, so interested in... whatever you are.]
Uh... [It's not like he hasn't seen his fair share of interesting aliens or whatever, but also... why is Keith ignoring him in favor of you :'( rip.]