I would suggest that you read the 12 traditions and seek understanding of them. They are what protects us from each other in AA. Often said tongue in cheek but it's also true. There is no reason to let anyone into your home, or near your partner, or lend them anything. Honestly. Keep it simple. and that included AA relationships. Just keep yourself safe. Anyone who expects anything different from you is probably best avoided anyway.
Stick with that sponsor of yours. And the old timers. The winnersthough - the ones that look like AA actually makes for a happy life for them.
BB