Think about it this way, whether you want to romance someone or not.

One of them ASKS you on a dinner date politely and all expenses are paid by her. If you like her, you can even kiss her in a really iconic scene.
One of them never actually asks you to show up, you show up uninvited and it's gonna cost you $86. No kiss, and she outright tells you that she doesn't care how much money you spent on her.