How to keep a relationship strong?

Hey guys, so I was jw if any could share some tips on how to keep a long distance relationship strong. So I met this boy and I fell hard for him. He is such a good guy and makes me so happy. We get along so well. We have be together now for 2 months. I’m only 15 tho and he is 18. We also live quite a ways away from each other. I just wanted to know if anyone could share sum tips, tricks or any words of advice of how to keep our relationship strong and ❤️ yee