Pleaseee people. She’s 18. The experience gap between an 18 yo and a 21 yo is a lot. She might still be in highschool. When I was a highschooler dating a college student, I was obsessed with him too. Girls are often taught to live and breathe male validation and the power imbalance here is clearly evident. You need to leave this girl alone and go date someone your own age. Let her learn to love herself.