If your budget is particularly tight, yet he still want to host a dinner party, you can still host the party at your house, that make a pot luck instead. This will save you money, and will also allow everyone to sample different dishes that they might not have otherwise had the chance to.
One thing you do have to worry about when hosted a pot luck is this there is a variety. You want to make sure that not everyone is bringing a salad, or dessert. So you can ask people to check with you about the dish they are bringing, and if it turns out you’re getting too many deserts, when the next people confirmed you can steer them towards the areas you are lacking in, such as casseroles or crusty dinner rolls.
Hosting a potluck dinner party can make it a fun event for everyone, while not costing the hostess a lot of money to do it.