so very true. i'm a little surprised at how many commenters above are coming up with excuses for this awful friend, tbh. being shy or introverted is one thing, but not saying thank-you, not paying for anything, and barely speaking to your host beyond one-word answers is just downright rude. if the friend really is socially anxious, then they should have explained to the OP that they have difficulty with social interaction. not mooched off them and ignored all conversation.

the lack of thanks isn't even the worst part imo. expecting a friend (especially one you only just met IRL) to make all the plans and pay for everything is just downright rude. especially considering how expensive some of those activities sound.