It's up to you to let him know that you're interested and would love to see him again and to give him your number. To be playful, just tease him a bit, lightly pat him on the arm, and just show that you don't take yourself too seriously.
[header] How to make a guy ask you for your phone number [title] Act playful. [step] Being playful is a form of begin flirtatious. Sometimes, a guy will be too afraid to ask for your phone number because he won't think you're into him.