Friends can be trusted. I had a friend that was selfish, because he used to lie. I would ask him if he could come to my birthday party. He said yes he could come to my birthday party. The next day it was my birthday party and I didn't see him there. On Monday, I saw my friend at school and I asked him why didn't show up at my birthday party. He said that he had to a game on the day that I had my birthday party on and he was lying. He didn't have a basketball game to go to, because one of my other friends told me that they didn't have a basketball game on the day that my birthday party was on.
Friends are there to help you. One of my other friend that was not selfish was the one friend that is always there to help me. One day at home I had homework and I forgot what page the homework was on. I was upset that I forgot what page the homework was on so I called my friend and he told me which page the homework was on. That is one of my friends that I think is not selfish.
Friends spend time with you. I had a friend that acted that he was my friend. He wasn't actually my friend because we never actually spend time together and we never talked. Friends are people that spend time with you and talk to you. Friends that spend time with you and talk to you are the friends you want to be with.
Friends that are selfish are the one that smoke and do crimes. If you have a friend that smokes and always get into trouble than that means he is a selfish friend. I wouldn't want to be with a friend that always gets into trouble. If I had a friend that always gets into trouble, then I would get into trouble.
Overall, you can tell many ways that your friend that you have is selfish or not. The way you can tell your friend is selfish is if he doesn't spend time and talk with you, always gets into trouble, lies and if he doesn't help you. That is how you can tell if your friends is selfish or not.