Why didn't you leave him right when you found out he cheated on you?

 Don't fall in love in high school, You're too young to be that broken.

 Trust your friends next time, and more importantly, trust your own gut instinct.

 Work hard in high school but don't forget to party it up. Stay out past curfew, mess sh*t up, try new things & go nuts. You'll regret it if you don't. High school is four years to be stupid and make mistakes, take advantage of that.

 Always be yourself. Don't worry about what others think of you. Everyone loves you already.

 You may not know it now, but the guy who broke your heart in high school is the one you're going to look back on and smile about when you're 80.

 Love with all your heart, stop worrying about the future so much, and cherish the moments, because in a few years you won't get the chance to tell him goodbye.

 Don't make one of the biggest the biggest life decisions you'll ever make based on what he wants. Although, if you do, don't get too upset because everything is going to turn out just fine in the end.