I’ve been with my bf for 9 years - we met at 19 at uni and we’re still a little childish when we met. I had some insecurity issues from my dodgy previous relationship and he had some anger issues. Safe to say those first few years were pretty volatile - some explosive rows and lots of mis communication issues. When we met we had an instant spark not just attraction but personality too. We always make each other laugh till we cry, we share similar views and hobbies, we have many multal friends who we solialise with often. Both our families love the other and we’ve spoken about buying a house, marriage, children. We’re saving up for those at the moment. In 9 years I’ve never cheated once and I believe he hasn’t either - we’ve no cause not to trust the other....
BUT, after 9 years we just cannot seem to communicate. We’ve spoken about this numerous times and just seem to be having the same argument on repeat. I’m so tired and exhausted I feel like it’s ruining what we have. I know relationships take work to nurture them and we have over the 9 years but I don’t feel like we’re moving forwards. Our arguments have been less explosive and we’ve both managed to rein back the behaviour that was annoying the other, but it’s still... I don’t know 
Take yesterday as a case in point:
I was out for the day for a family day which had been planned a while - he had no plans for the day. In the morning when I left I said: don’t eat the leftovers in the fridge for lunch as well have those together for dinner, I’ll be back around 6ish, have a nice day, love you bye! He said: ok, have fun with your fam, love you bye!
During the day he msgs a couple of times just asking how the day is etc. He tells me he’s gone round a friends to watch sport with another friend of ours. (We have a mutual group with the mates & I saw them organising it on there so knew it was happening). I just said cool, don’t get too drunk lol.
6pm rolls around and I’m home and he says he’s having too much fun and doesn’t know when he’ll be home. I said but we had plans to hang and eat together and now you’re just leaving me in the lurch alone?
Que explosive argument over WhatsApp which culminates in him breaking up with me. He gets home at 11pm, goes to bed without talking about it and in the morning acts like nothing happened. When I try to bring it up he says ‘yeah well you were having a go at me and those plans weren’t set in stone. You don’t own me.’ He’s done this before - I.e the breaking up whilst drunk and then saying ‘I was drunk I didn’t mean it’ I nearly ended things two years ago as I was sick of it and said it was a childish way to deal with confrontation & messed with my emotions and wasn’t a relationship I wanted. He promised to change and things were good... just until recently. We’ve been arguing a lot and now this.
Was I in the wrong? Am I too demanding to expect him not to bail on plans? Am I making plans in my head and not informing him?! (What he says) I’m so confused - it’s been 9 years and I’m afraid that we can’t communicate... where does that even leave us?
I go from planning marriage and a life with this guy to wondering if its all been a waste of time and we should just end it from day to day sometimes! Help me 