I am FUMING!!

 OK so me and Ash broke up -  but for real this time, i've moved out a week after i'd paid him a full months rent and am now sleeping on my mum's couch, sucks right.
It gets worse.
I was speaking to Ash as we decided to stay friends and he confided in me that he thought i was only living with him for somewhere cheap to live that's nice. As if! His place is horrible and i can live cheaper in a nice room in a student house!!
If that wasn't bad enough -  we were going on holiday together with a group from uni. He pulled out obviously but said he was still going to pay. I found out a few days ago that someone else might be interested in taking his place and that if he was he wouldn't have to pay his share.
The guy was still unsure so i text him earlier to tell him he may still need to pay for it. Well that was a bad idea. He went off on one about how he shouldnt have to pay anything cause he gave up his claim when he said someone else could take his place ( not that he was planning on coming anyway) and that he was refusing to pay.
He then went on to bitch about how because my furniture is at his house ( i generally paid for half of everything and all the chest of drawers etc except the sofa- but it is in my name on finance) i should still be paying him rent!! I paid him rent at the beginning of the month as i always do but we broke up on the 7th and i moved into my mums!!
I paid him £300 and he gave me £100 back last week, that's £200 to store my furniture in a room he doesn't use for 5 weeks!!
I'm absolutely livid, who the hell does he think he is?!