"He's out of your league" is a myth
Some people can be cruel and can say that a guy is out of your league because he is good looking. Some of those people can be your friends. What their saying is not true.
When someone loves you they love you for who you are. Even if you don't look like you fit together, if you love each other you can make it work. Saying that someone is out of someone's league is a steroetype. It is a rumor and it can hurt someone and ruin their self-esteem.
If you have a friend who says that or tells you that no guys like you. Talk to them. If they say "it's true," or don't apologize then cross them off your list. You don't need people like that in your life. You need people who will bring you up and not push you down. Look in the mirror and say "I deserve love." "I can get any guy I want." Never let anyone make you feel that you don't deserve who or what you want.