Seriously.
And if you really think about that with a clear mind, it's the most realistic ending. This is how toxic relationships go most of the time, sadly. Because, let's be real, even TJ stans (the sane ones at least) has to acknowledge that their is a toxic relationship. We humans are not perfect at all, we have a lot of flaws, and I think Doyak represented it very well. I would've even preferred Ian ending up alone, searching for his way, that would've been even better.

Even if you don't like the ending, you can write your opinion in a constructive manner without being insulting. I liked Jo more, and I do not agree with Ian ending with TJ (for many other reasons, not because I liked Jo), but Doyak did an amazing job writing and drawing this story. She deserves respect.