Martha would differentiate between loving someone and still being in love with them. While she would always love the Doctor, she definitely wasn't in love with him any longer. It certainly wasn't the case that he made her smile or made her heart do the little skipping bits that hers did when Severus looked at her.

If his still did once he'd gotten over the initial shock of seeing her and having her be alive, then they'd deal with this again, and it would probably have a much different (and more final) ending.

Right now she wasn't going to think about that. Right now it was old loves still having a place, and it was the two of them getting through this and over to things on the other side of this and trying to find footing that felt like it was less on mud.

"I know," she said softly. "And I love you."