What is the ambiguity in your R and are you OK with that? This is unclear to me.
There are 2 types of boundaries, emotional and physical. It sounds like you are also having trouble with the emotional boundaries if you're up and down in several hours based on texts or calls or maybe I'm misreading your post above.
That's where detachment comes in and while time is an important factor, it also takes mental work on letting go.
Me 57/H 58 M36 S 2.5yrs R 12/13
Let me give up the need to know why things happen as they do. I will never know and constant wondering is constant suffering. Caroline Myss
