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Their faces were still grimy from the battle and their hair was a mess. It didn't matter. They were going to get married. It'd be a lie to say they'd been waiting for this their whole lives. Yelena never had the luxury to fantasize about marriage, not with herself at the center of it. Kate just hadn't thought about it. Not until she met Yelena.
So here they were in a random chapel, in a random city. Their co-workers were their witnesses as they promised each other forever. Yelena pulled Kate into a kiss while everyone cheered. They were married.