How to flirt🫩

So basically I have a crush on this guy who’s a year older and we both followed each other on Instagram AND HE SENT A REEL FIRST MIND YOU WE NEVER TALKED IRL and we have had some conversations but the thing is I think he’s just friendly like that and I want to let him know very subtly that I like him. Should I just complement him?? His posts are all about cats so I can’t reply to his stories being like you’re cute T-T