XD;;; Yeah, the way they handled female characters wasn't exactly the best, but then they were kinda pressed for time and had this scheduling problem... urgh.

Anyway, seeing how feminine Hilde can be when on downtime, I have a feeling she wanted to be domestic (at least part time; the rest of the time she played with guns and heavy machinerie in a very sexay way u.u) I think this Duo, after the war and all that mess, he thought that was what he wanted, so since he loved her anyway he tried to settle down with her. And eventually he felt totally stifled by the routine and the lack of risks. They were still in love when they split, but neither of them was happy with how unhappy he was in that life, and Hilde did want to get married eventually and that wasn't going to happen, so it was better to end it before he started resenting her and she started feeling like a jailer. It kinda sucks.

Hilde's been tentatively dating again, but I'm not sure it's going very well right now. XD; Duo's too busy with other things. He doe have casual sex, but nothing more.