Dear ____,
How are you doing? I wanted to tell you about something that happened. You know that I have a friend named ___, right? I got into a fight with her/him. She/He was feeling sad because I couldn't talk to her/him lately. I had a lot of homework and I couldn't even text him/her. I didn't even realise. After she/he told me that, I apologized and made sure to remember that I have to text her/him. Now we're doing great!
I have to go, but remember to text me later, right?
I love you a lot,
___.
