"On again, off again for a lot of years. It ended badly. Then she died."

That's the gist of it. That recap doesn't cover a lot of things that he'd rather not talk about, but it's something. What hurts him more than anything was the way that no matter how much she swore up and down that she loved him and no matter what she promised ... he never quite mattered to her as much as her ideals did.

When it comes to Natasha, it's always hard to tell when it's time to make a move and so, he usually lets her make it. When she leans into kiss him, he goes all in. He brings a passion into it that makes it feel like if this was the last display of affection he was ever going to give someone ... it would be going out on a high note.

"Come back with me tonight." He murmurs. "Nobody should be going back to an empty place on a holiday."