Twat twat twattitty twat.
'1st and 2nd pub too quiet for him. Third pub too noisy.' Are you going out with Goldilocks?
'He walked out and left me. I followed.' This was to control you.
'Spoke and he walked off again.' Another control move.
'phoned and texted him but he didn’t return.' Control.
' I texted to let him know I was going to walk to taxi rank and he was welcome to join me. He didn’t and walked 7 miles home.' Now he's a toddler having a strop.
'He is blaming me, all is my fault and I am childish' Yep, control. It's called DARVO - deny, attack, reversing victim and offender. The childish one accusing you of being childish.
'He’s now packed his bag to leave, went out to his car' You were supposed to panic, apologise, agree you were childish, beg him to stay. Control, control, control.
You're not being unreasonable - you're being coercively controlled.
And it's going to get worse.
You'll find a lot of help here with this.