[He falls silent for a second.] No. I don't lie if I can help it. But I haven't been able to help it... until recently.

And there's more ways to lie than just technically.

[That much is obvious. Bruce knows how deceptive he is-- how much convincing others that he's a harmless, unassuming scientist is feeding them the biggest load of crap he could deliver. The Hulk is the very opposite of that, and whatever his own opinion on his identity, that's still what lurks inside him. What they have waiting for them if they make him angry.

Bruce lies so much and so constantly that he's become desperate to believe his lies.]