I believe if you stayed, being in very different financial decision making realities, bitterness and resentment would destroy the relationship in the long run, anyways.

You gave him an opportunity to display compatibility by living together.

Plus, lesson from my own experience, if conversation isn't really there, without truth serum, then it's a long road to misery.

You expressed something else, that's a huge relationship red flag. If you wrote a letter, you wouldn't feel like he listened anyways. Feeling unheard in a relationship is about as bad as it gets, imo.

Grieving sometimes involves, doubting choices. Sometimes it's not right or wrong, but staying true to your own self integrity.