This is a good trick that sometimes has breathtaking results. Take your characters and place them somewhere perilous – abseiling down a cliff face, on a small boat in a stormy sea, far underground – and then get them to have that conversation they’ve been putting off for far too long.
Their emotions will be heightened by the circumstance you’ve stuck them in, which will add drama to every niggling complaint, accusation, declaration of love, or whatever fearful thing you want them to own up to.
If this image prompts you to write something, I’d love to know. Just send an email to Judy(at)socket creative.com. You could end up published on the site!