Played with this idea for a bit and not quite sure what i think about it but it was fun to write.
Its Tony's after day 3 reflecting on things

He did what he did because he loved her. It was that simple. Except it wasn't. He'd run the situation through his head over and over, trying to make sense of it.
His current theory, and it was only a current theory and was subject to change with both his pattern of thoughts and his mood, was that that was not the reason at all.
He'd done what he did, not because he loved her, although that was a valid point, but because he couldn't bear to see her get hurt. That was not the same thing as loving her, nor was it the same thing as not wanting her to get hurt. He didn't want to see her get hurt. It was another thing entirely.
If he'd loved her, he would not have been willing to let her get hurt, but he would have also listened to her. Her voice rang through its head in the same way as it had done every second of every day since he arrived here. A simple laugh, her annoyed sigh before she launched into an explanation of why it was important that he left his keys on the hook and not wherever it was he had left them in this particular instance, a stifled sob where eyes pressed tightly closed and jaw clenched had not been able to prevent it. She was with him constantly, even if she wasn't actually with him.
He could hear her as she repeated what she'd been told over the phone, not a trace of fear in her voice. This was followed by her almost begging him not to do this. Anyone who knew her less well would think that this was motivated by fear, but he knew her, and he knew that she was prepared, more than prepared, to die. She had accepted that she was going to die, hell, she had had to accept it in the hotel, so it wasn't such a big leap to apply that to this situation. And yes, he knew full well that she was scared, but he knew that she wasn't about to let that show. He was the only one that she showed things like that to.
But he hadn't listened. The person he loved more than anything in the world had begged him not to do this, not to let LA, and probably after that the entire world, go to hell just so that she could live. But he had ignored her, and this was the source of today's current theory.
But the theories, they were based on something else entirely. His marriage, their marriage, had been hell. There was no secret there. 2 years of fighting to even be allowed to date had led to difficulties on a level that neither of them imagined. Peculiarities that should have been discovered much earlier on weren't discovered until after they were married. There outlook on the future was entirely different. She refused to have kids until they were both in jobs where dying wasn't a distinct possibility. He on the other hand, wanted a family as soon as he could get one, having watched the rest of his family move away with their lives, he desperately wanted to build himself a new one.
That was why the job at Langley was so important, stable jobs meant a chance at a family, and being away from CTU would take them away from prying eyes that were waiting for them to fail.
Then there was the matter of the lies. He had lied to her 78 times, counting each one of them and praying it would be the last. And although she hadn't known, it had put a distance between them, her aware that something was wrong, and him not quite being able to meet her eyes knowing that he was lying to her.
And yes he loved her, but something inside himself questioned whether he had done the right thing, and so he created theories to explain his actions, anything really to try and explain what he had done, to try and wash away the guilt that swallowed him.
At last he heard the rustle of keys approaching, breaking the soft echo of her breathing that surrounded him. This was it, this was his chance. He brushed his fingers across his cheek, unshaven for days. He knew publicly she'd disapprove, but he also knew that in reality she loved the way his stubble felt against his face. Not that she be able to touch him, they had nice glass walls to prevent that.
He tried a smile out in the mirror, anything to cover up the hollowness in his face and the dark pits in his eyes from nights of sleeplessness caused by her agonised screams as the knife blade entered her flesh. This had never happened, and yet he knew every movement the knife made and her every feeling as the cold metal penetrated her eye.
The smile was not enough to cover this up, but it was a start and he knew she'd appreciate the effort. And more than anything he needed her to appreciate what he had done, understand, forgive, anything really. Because he couldn't keep going on like this. And after all, he really did love her.