Over six months is a considerable time. It took me and Redpepper around the same time to become more settled and stable. There was always enough pleasure to tip the balance of pain which kept us working at it (I'm not talking sex, I'm talking emotional connection with a lot of depth and vulnerablility to each other).
Eventually you will have to make a call in order to ensure your overall health. How is your boyfriend doing? Is he torn apart too or do you feel alone in the struggle?
What do you want out the relationship? Will it meet your criteria to continue investing in it?
Figuring out what you want is usually a pretty good starting point to decide if this relationship is worth pursuing.
Playing the Game of Life with Monopoly rules.
Monogamy might just be in my genes
Poly Events All Over