how can you save a relationship at its low point?

It would work ok if both parties are willing to work things out.. I think both should try to understand each other and talk things over before deciding on things.. Communicating is very important, though it may take some time but at least you can clear things up.. Open up the problems involving you two that's been troubling you and make the most out of it. Don't just go blaming on each other, it could even worsen the problem. At that point also, both should be sincere enough so that they would know what to do..