Would you be mad or trust this person.?

My sisters boyfriend lives with us. One time he asked to borrow money from me. I gave him $100 dollars and he said that he will pay back in two weeks. After two weeks he stopped showing up at our house. I decided to wait a month and see if he will keep his promise and pay back in two weeks. About a month past and i didn't hear anything from him. I decided its time to text him and tell him that he said that he will pay back in two weeks and why he disappeared after borrowing money from me and my family. He just made really stupid excuses and he finally paid back and everything went back to normal until he took one of my tools without asking me to use it. He broke my tool and he told me that he broke it and he said that he will buy me a new tool. About a month past and he didn't buy me a new tool. I told him that he said that he will buy me a new tool but a month past and nothing happened.