Walk-n-Talk / "Drunk Walk"
Ask the couple to walk and talk. There are lots of variations you can do here: hold hands, have one lead the other, etc.
You can make it a little more spicy by asking them to "act drunk" – just sway back and forth while they walk, bump hips every now and then, just have a little more fun with it!
Try to get the shot with varying framing –a tight on their hands, for example, helps us to make it into more of a sequence