I love coffe- ask him what he likes doing on chol hamoed, in the summer, bein hasdarim,
Does he like music?
Excersizing?
Smoozing with friends?
Camp?
You will not sound wierd if you talk about something other than torah, he’s not expecting you to be like him, ur not a yeshiva bochur. Its ok and great to tell him about ur experiences in school and camp and whatever. You should be yourself and not turn into the person you’re dating. Remember even after you get married you are still you, so don’t hide it now. Good luck.