A nice detail here is that Barda doesn't go all 'Oh, Scott! Do you mean it? Really? Oh, my darling!' on him - she'd obviously been expecting this, and so had he. It illustrates their relationship very well - they're not just the perfect couple, they're the perfect TEAM, each in tune with the other's way of thinking.
Scott: I was thinking we should...
Barda: Get married?
Scott: Yes. What do you...
Barda: You know perfectly well what I'm going to say. 'Yes, I'll marry you, of course I will, kiss me, you fool, mwah mwah mwah', etc. But that's for later.
Scott: Right. First, though, there's...
Barda: The enemy. Right. They're easy, though. The real problem is...
Scott: What kind of food do we serve at the wedding reception?