What to do about an abusive ex boyfriend?

I feel like a fool for going out with him in the first place , but was not aware he had a drinking problem at first

It got steadily worse , he is in denial , doesn't make sense when he's drunk and gets abusive but clingy

I met up with him at the bar yesterday he works in ( not the best job for him but there is an obvious reason he likes working there , being surrounded by alcohol all the time ) as it was the owners Birthday & he wanted me to come along

I was HOPING we could have a simple good night out together as couples do but from the minute I got there ( he was already drunk ) I found he was being disrespectful to me and way too clingy and all over me in front of everyone which I did not like so I told him so

He was being boisterous and treating me like one of the lads and even grabbed me in a ruddy head lock after which I walked out to go home

We talked and he apologised and said he would treat me better the rest of the night and it improved a bit but I still had to keep telling him if he stepped out of line by eg grabbing my bum in front of everyone which I HATE as I find it really disrespectful & even his friends told him off for how he was treating me & talking to me & I think one of them even warned him he would lose me if he carried on!

He was trying to get me jealous about some girl who liked him but I told him I didn't give a sh*t ( I don't like game playing )

Things escalated when he ran out of money after buying me 2 ciders and spending the rest on himself! lol

He kept asking his friends to buy him a drink & there was an air of desperation about him

His boss bought me a shot & I sip shots as can't seem to knock them back & I took 1 sip of it , put it down & in an instant the twerp who was supposed to be some sort of boyfriend to me grabbed it and knocked it back in an instant without even asking me!!!

To say I was peeved is an understatement & it escalated quickly into an argument in front of his friends & he told me to p*ss off out of HIS bar ( yeah , right )

I was leaving anyway but he followed me and stooped so low as to ask for the money back he spent on my 2 drinks for the night ..... I just said something unpleasant to him and got on my bus and had already told him in front of everyone that I NEVER want to see him again & he just shouted out some very nasty names to me

He lies alot now & makes things up so his friends will only have his 'version' of events and he always twists things even though they saw how he was treating me and did not agree with it but he probably won't even remember what happened and I am WELL RID OF HIM , glad I spoke my mind etc but just want to know there is the possibility of meeting a NORMAL guy in the future who respects me and treats me like a real lady which is what I want not this b*llshit! lol