When you were 15 you ran away from your abusive family. You bought a bus ticket and ran away to the other city. You were soon found by a very wealthy man. He felt bad for you, and decided to give you a room in his house. Time passed, you two became close. He paid for your studies, food, clothes and stuff. When you turned 17, he started developing feelings for you, but you were underaged, so he had to wait.

More time passes, he waits patiently until he can finally show his love for you.