Dear Diary, Hooking up with a girl can be fun for both you and her, as long as you're both into it. If you're feeling bold, flirt with girls you meet in person to see if they're interested in a casual hookup. Alternatively, connect with girls through dating apps so you can flirt with multiple girls at once. When you've found a girl who seems to be interested, invite her to meet up in private for a potential hook-up.