<human>: I've been with my girlfriend for about 2 years now, we've been ridiculously happy except for the last couple weeks.

I'm an introvert with extreme social anxiety. She is an extrovert. For reasons unknown, we've managed to make that work for as long as we have, but recently we've hit some pretty serious bumps. She first made a post to this subreddit and later told me about it where she says that she's become bored with our relationship mostly because I am too anxious to do many things. We agreed that I would work on it.

We're doing a lot better now since we've been talking a lot more and doing more things together outside the apartment, but I still am very paranoid that she's not quite as happy as she seems. She said that she wants to be challenged in her relationship, and I wasn't doing that. So how do I do that? She wants to go on adventures and have discussions and I am more than willing to do that, I just literally have no idea where to start.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: I need to challenge my girlfriend and not be a pushover who doesn't do anything unless she wants to. Help?