I think the painting is about how even people who are as close as lovers may never truly know each other. These figures can't truly see or feel each other with the fabric over their faces.
They are very close, like lovers should be, but even with that closeness they each keep something of themselves secret or hidden from the other.
Whether that's done intentionally or not doesn't really matter. Every individual is infinitely complex. It's impossible to know another person fully.
I would rename this painting The Blind Lovers
In my opinion it is perfect interpretation and it is true indeed!