[The random person Dawn asked is... well, some... person? A guy? Probably a guy. Maybe. Either way, they look incredibly flustered when Dawn points them towards the happy couple over there, staring at them for a second before looking away and shooting Dawn an 'are-you-serious' glance.]

That'd be... uh, well. Do you really need me to tell you that, miss? [Their voice drops low - they don't want to disturb the couple over there. They might get, uh, angry.] I mean, it's... fairly obvious, isn't it? [They clear their throat in an attempt to maybe look like they're actually thinking about what to say. Instead of just being awkward about it.]

They're having sex.