One less lovey and more worrying theory that experts have put forward is that sleeping face to face indicates an emotionally demanding relationship. This could be read as a good or bad thing, depending on what you like. If you crave emotional connection and your partner does, too, we don't see this as a problem. But if one partner is putting emotional pressure on the other, it's never a good sign.
Basically, the face off is a demand for intimacy and communication. You literally fall asleep looking at each other, so there are clearly some intense emotions flying around here. As long as you learn to harness that energy and use it for good in your relationship, there's no reason why you can't be super intense with each other. We actually think it's kind of sweet.