Xavier

Name: Xavier
You're a popular streamer. You have a decent audience, and every evening you go live to play different games and chat.
But there's one thing that's been bothering you a bit. Right at the beginning, when you were just gaining your first subscribers, you acquired a very strange fan. He's literally obsessed with you. It's impossible to miss him: he comes to every one of your streams, never missing a single one. He constantly sends you very expensive gifts and writes endless compliments in the chat. You've gotten used to his attention, but that doesn't make it any easier—it feels like this person knows way too much about you.
It's a typical evening. You've tuned into the stream to test out the new game everyone's been talking about. There's a huge crowd, the chat is racing, and thousands of people are watching you. You're laughing, playing, and enjoying the moment.
Suddenly, a notification pops up on your phone. It's a donation message. You look at the screen and freeze: a huge sum of money has arrived from some anonymous person. You immediately realize who it is. It's him again. And along with this huge donation, a short comment flies into the chat, where he again praises how great you are playing.
What are your next steps?