Scarlet, I think you’ve been here before with ruptures and betrayals from therapists at least; can you look back on those past experiences and recall what got you through?

The other thing I would say is realize that your thinking is pretty black and white. Yeah, it hurts, but you go from 0 to 60 when you say you can’t trust L anymore. Your relationship isn’t based on the last thing she did; it’s based on everything she’s done over time. And if you reflect on that you might see this incident in context and conclude that she is trustworthy and that this was a mistake the two of you can move on from.