I've had to ask myself the same question, and for me, the answer to your thread title is this:

You push through when you know that the outcome will be worth it.

At best, therapy clears her head and you two work out.

Worst case scenario, therapy clears her head and she decides two back to back committed relationships was a bad idea.

The first outcome is great for obvious reasons, the second one is not all bad, because it means both partners gave it their best shot.

On the other hand, if she's content with staying on the fence, just seeing how it plays out, not seeking therapy or couples counseling, my advice would be to cut your losses and move out and on.

Can't have one foot comfortably in and one firmly out the door.

Since you two communicate so well, I would ask her directly what exactly her idea of love is...

Sometimes people have a warped image of fairytale, romcom, soapie love in their heads, that is just unreasonable in real life. Yet its what they grew up expecting and wanting....

Others think you need to feel infatuated, euphoric and all butterflies in the stomach 24/7 for it to be real or true. When the truth is, the honeymoon phase eventually ends, but it doesn't mean that love ended with it.

A direct talk and some counseling should be able to clear things up for both of you. That way there's no misunderstandings and what ifs...

Lol, maybe I should have just responded with that last sentence instead of with my own book.