<human>: Give me the gist of the text in a nutshell

To clarify our parents are going away on vacation over the summer break to Hawaii and they are leaving us here in Oregon. It is just going to be the two of us and our aunt checking in on us every day. 

We got into a massive argument over something so stupid. I thought my step brother went into my room and stole money from my wallet. I accused him of it and he pleaded that he was not guilty. He was telling me he would never do that. Things were getting heated and we said some pretty nasty things to each other. 

I got home from the mall 30 minutes ago and I feel so bad. Over the course of the day with my friends, I remembered that I loaned that money to someone and forgot about it. 

I came home today and he had left money on my bed, with flowers. He also left a note saying " I am going out with the boys tonight. I don't know why you think I stole your money but I didn't. It's clear to me no matter what I say nothing will convince you, so there is your money you claim I stole and I bought you flowers to say I'm sorry for some of the things I called you"

I need a way to apologise to him, because if I don't it's going to be a long awkward summer.
<bot>: I loaned money to a friend and forgot about it. I accused my step brother of taking money from my wallet and he did not. I need a way to apologise