My boy friend is a picky eater help?

ok so my boyfriends dad is going to Panama for the weekend. Im going there to keep him company while his dad is gone. Its two guys living ther so they dont buy grocerys. i told him wen i go over ill buy sum grocerys and cook for him wen im there. Hes picky he dosnt like any veggies or seafood he likes sum chicken but he loves steak. I dont have much money. So do you have sum inexspensive easy recipes i culd cook that you think he would like ???? thanks its my first time cooking for him. im use to cooking for my family. but my dads not very picky so please help. im a college student so i dnt have alot of money. i have likke 20 dollars write now for sum food.. please help thanks