Because I didn't want you to know!

[He flaps back, matching the energy like for like.]

I knew you'd freak out and I just needed a little more time. What was I going to say, huh? Oh hey Mako no big deal but just so you know I'm apparently incapable doing something as simple as finding a place to live- no! And anyway, I like my hole so just-- just back off!

[He'll regret this in about thirty seconds but right now the anger feels valid and better than guilt.]