Search Results: meeting another girl

I have been into a one-year relationship with my boyfriend. During the half year, I didn't know he doing something fishy.

June: My boyfriend went to another City to pay his full rent because his friend suddenly left him. He also said to me that he has to go to another city to earn money.
July: I didn't know he was using tinder and meeting a girl named Dianne. This girl offers him a house to live in into that city.
August: He went back to me and ask to live with him. As his girlfriend, I said Yes. He left all his things and cars in the house. But during this month, there was a girl who keeps calling him every single day, he named it as Dianne girlfriend." I asked him why he put girlfriend, he said its nothing just typo error. Only a friend in another City. We paid half of the house bills.
September: The whole of September, he didn't go back to the City and only said that he has to sell all his things because he has no more money. During this month we still split bills.
October: He went back to me but only for a week. He got very mad at me because I wasn't able to pay my share for the rent because I have to pay my overdue loan.
November: I kept calling him but he never picks up my call. That time, I get irritated and I keep calling him at 3 am. He picks up his phone finally and got mad saying WHAT DO YOU WANT?
A day after, there was a girl named Dianne who chatted me on facebook. She was asking if I am having a relationship with him and my boyfriend lied to her that we already break up.
She said, they are just friends and she doesn't want to destroy a relationship. But I wonder why he reach out to me and been spying and even said I shouldn't tell him
I get very mad when I knew he was living with a girl because he lied to me that he was living with a boy. I did not want to pay the rent because of this and he yelled at me saying, USELESS GIRLFRIEND.

I still have small money left should I still pay for the house rent or not?