How do you fully get over your ex-boyfriend?

We had been in love and dated for 8 months but broke up mutually even though we still liked each other. I cannot fully get over him because he's the only kid in my school with some maturity, some responsibility, and is funny nice and has great values in life. There's a ton i regret from our relationship and a part of me wanting him back, but i dont know how to fully get over him.