Here you are doing a collab with my oc or your crush.
Scenario 1: You notice a a YouTuber with the name of Chloeiplier and you think that she is copying Mark. You click on one of her reading your comments and you find out that she is Mark's daughter.
Scenario 2: Your Youtuber crush comment on one of your videos that they want to do a collab with you some time.
Scenario 3: You can make on up.
So that is all I can really think of I am not that really creative. If you want to do the third one but cant think of anything then I will try my best to think of something.