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What are you doing step-youtuber?
Does every video HAVE to be funny tho? >

no but at least make it enjoyable >

Some definitely seem forced. Two funny people aren't necessarily going to be funny together. 
There are some good collaborations though. I follow a few fitness related YouTube creators and their collaborations are cool.
Recently Adam Ragusea (cooking YouTuber) was on Renaissance Periodization (bodybuilding channel) and it was such a fun collaboration. >

So you want something new but don't want new people in videos together