A possible concise summary is:
Matt pranks Rebecca and Daniel by pretending to lose his memory after they ignored him for 24 hours. He acts confused, wears Rebecca's jacket, and runs away with roses. They follow him and find out he was joking. They also get a message from the Game Master about a Battle Royale on their roof.
Some possible facts extracted from the text are:
1. Matt is pranking Rebecca and Daniel with the lost my memory prank.
2. Rebecca and Daniel were doing the ignore me prank on Matt before.
3. Matt hid a note on a Starbucks mug that said "Matt is missing haha".
4. Matt wrapped his head with a bandage and pretended to not recognize Rebecca and Daniel.
5. Matt put on Rebecca's YouTube Rewind jacket and danced to Fortnite emotes.
6. Matt ran away with roses and Rebecca and Daniel followed him.
7. Matt revealed his prank to Rebecca and Daniel and gave the roses to Rebecca.
8. Rebecca and Daniel got a message from the Game Master about a Battle Royale on their roof.