Accidentally gave my Game Idea to someone....?

I typed a document that has a very detailed description of a game I’ve been developing in my head for about 4–5 years. It mentioned the setting(it has a very unique setting for a video game series), the battle system, full character descriptions(even how boss battles will play out for each character), and major plot elements…pretty much every idea I’ve had for the game up until now; it was about 20 pages long. It even included a general description of the whole series.

I live in New York and I went to college with the guy, but he moved to California. He works in Film, but he also showed an interest in video games and says hes been to a couple game studios in the past.

Its only a paper copy, so I asked him to shred it, burn it, or tear it up. After 4 straight weeks of him ignoring my calls and texts, he finally answers me but blows up at me saying that he apparently did what I asked…I really want to believe him….but based on his actions when I tried to contact him about it, Im not completely sure…

I registered the game for copyright recently, but its been at least a month since I gave it to him….

I’m not sure what I was thinking….am I screwed….?