If you don’t have an Epic Games account, you should make one to take advantage of their weekly free games. Thoughts about the company aside, you occasionally get access to some great games like Borderlands 3 and Prey.
I recommend Daniel Mullins games if you like games that challenge the forth wall. Pony Island and Inscryption were fun. I’ve bought The Hex but haven’t sat down and committed the time to it yet, but it was very highly recommended to me.
If you like games like Undertale, it’s sequel Deltarune is free on Windows. Two chapters out so far.
If you happen to be a Pokémon fan, it’s not really AAA stuff that needs a gaming machine, but I recommend Pokémon Reborn. It’s a fully complete fan game that I’ve been following for years during development. It’s also free to download and supports online PvP and wonder trade.
Congratulations on your gaming pc!
I think it’s definitely really early to say if they have proper romantic interest in you, given you’ve only known each other about a week? But from your post, it seems like you two have points in common and have a lot to chat about, which is often a good foundation for relationships, friendly and romantic.
In terms of learning Linux, it’s probably ideal to have a bit more of an outline of what you want to start teaching her because it’s a huge jump into a new OS (not that I know much of myself). She may not know where to ask you to start and would appreciate more suggestions from you on where to begin, like telling her “Today, let me show you (practically) how to install (OS) on a system and navigate it” and going off that.
I think the tl;dr would be: Have a Linux lesson plan, expect friendship first. Take it slow.
Hope things go well.