Keith knew that you had a valid reason to end it, even if he wanted to pretend otherwise. The reason why wasn't the issue he was having. It was the fact he was forcing himself to try and move on, yet failing miserably. I mean, how could he? When now that you're both broken up, you seem to just be everywhere, and every time he sees you he hates himself just a little bit more.
You look good. Of course you do, you always do. The way you laugh, the way you talk- hell- even the way you walk. He attempted to distract himself with extra training, but it seemed you consumed his thoughts even more than you did before.
It was because of that, and throwing himself into rather... precarious situations; that he ended up here, with you, helping him into one of the Cryopods despite his numerous protests.
It was only then that he allowed himself to come to the rather pathetic realisation that he wanted- no- needed you back.