Misono: "Interact with him naturally... joke around a little"
Good advice! Be natural around people you like. Better yet, be with someone you can be natural around! I remember when I was hanging out with some friends. One of the guys had a girl he liked (not present). He was joking around, and one of us said, "Ooooh! You should say that kind of thing to HER!" And he shot the approving group a look that said, "Absolutely not". But yes! Do show the person you're head over heels for your true self. That crush didn't come to anything, but my friend later married a person he felt he could show his true self to.