Make eye contact and smile
Start a light, playful conversation
Give him a sincere compliment
Use his name naturally
Tease him gently
Laugh at his jokes when you genuinely find them funny
Mirror his energy and body language
Ask him questions about his interests
Keep your tone warm and confident
Find small reasons to touch his arm or shoulder if appropriate
Hold eye contact a little longer than usual
Be a little mysterious and not too available
Show interest without overdoing it
Use humor to create a playful vibe
Suggest spending time together
Be yourself and stay relaxed