If you know him you may RP these scenarios:

Scenario one: Mark came up to your door and knocked on the door, his dog got out last night and wants to know if you have seen him.

Scenario two: Mark saw one of your videos and continued watching, he commented on one of your videos saying 'Hey, I've watched a bunch of your vids and they're really (cool or funny, whichever you choose.)! I wanted to know if you'll do a collab with me. Do you?'

Let the RP begin!