Hi! Tomorrow morning, take a walk, take time to cool off, then come and try to write down how you're feeling. Read it, find key points, then communicate them with your S/O. List improvements that you want to work on together because you care about them but you also care about yourself and want to see yourself happy in this relationship.

Also, start Therapy again.

If he was in a situation where he felt uncomfortable and needed to go home, that's understandable. But it seems though that you have other issues that've built up over time and this was your tipping point. You need to communicate these issues with him. If you feel as though something is always slipping through, tell him. Ask him what needs to be done so that they don't slip through. When I was messing up at work and projects were slipping through the cracks, my boss set up a daily catchup email. Find your catchup email and find what works for you.

And go back to therapy please.