The Dweller. Prophet. Statistician. Sometimes madman. It is unclear, even to himself, whether he is seeing the future or calculating probabilities better than the fastest computer in existence. Needless to say, The Dweller knows things, often before they happen.
Hell, what took him so long? After all, it takes two to tango. I’m also beginning to wonder about the place they’re in. Since it appears to be at least partially built out of emotions, does it in turn feed emotions? That would make some sense – most of our strongest memories are tied to our emotions.
1) Technically, unless they’ve officially parted, he’s still Calliel’s lover.
1) b) He may have been afraid that Calliel would attack Lisa if anything happened.
2) He’s had his mind so full of saving the world (and possibly the universe) that minor things like relationships may not have crossed his mind.