I don't recall their scenes in Helpless being super angsty. There is that opening scene where they are training together (one of my personal favorites) and then just a few other sweet moments for her b-day.
Probably Choices, right? For most of the episode they're basically a happy work-play couple and almost completely in sync. They patrol, do the cool break-in stuff, fight vamps together, there's the showdown at the school. It's only stupid bad-Mayor who jinxs it. And even then they cuddle in a graveyard afterwards.
Lots of Bangel material.