Just for another viewpoint from someone who’s therapist-unfriendly in a rather abstract way. In times of intense stress, people are vulnerable to manipulative narratives really getting inside their brains and messing things around. Narrative is essentially what therapy is all about; the good therapists will use it responsibly, and with you; the mediocre-to-bad ones will use it irresponsibly and at you. So, sure, give therapy a shot, but be very wary of the urge to cling to the first one you find–you get even the slightest bad vibe from dealing with one, get out. You’ll be paying them; they work for you.
No one can cast judgment on your relationship and where it’s going, so I’ll just comment in broad strokes. A relationship takes hard committed work from every person involved in it. Lack of that, from either or both, will kill it.
Further broad strokes: when someone has acted in a certain manner, they are very much likely to do so again. People are cyclical critters.
My unsupported gut hunch is that the both of you are cautiously and unhealthfully circling around matters, both afraid to actually reach out and grasp them because the likelihood is that in so doing, the threads that previously bound you together will no longer be there. That’s certainly painful, but the longer the cautious circling goes on, the more unhealthy things will get. So don’t.
Narratives: the more you dwell on this being a or the definining moment in your life, the deeper the emotional hole you dig for yourself. Stop it. Life doesn’t have a scoreboard. The value of things are different than the duration of things. Relationships are born, and relationships do die. They also go through ups and downs, and sometimes they look like they’re dying when that’s not necessarily the case.
Anyway, good luck, however the bones roll out.