"Well, that's great, but how am I supposed to do that? 'Hey, I'm sorry for the Galra version of me forcing himself on you, I hope you don't hate me?'" Keith's tone is sarcastic but there's a tone of helplessness there too. He's totally unsure about how he's supposed to go about this - all he knows is that he wants to, to make it right, to make it so Adela doesn't mind being around him again.