Months ago, FI and I asked his parents if they would be willing to pay for the rehearsal dinner. They were quite clear that if they contributed, it would come out of our wedding gift. At that, we decided to ask my parents to pay for it, and they accepted. I sent out the invites for the rehearsal dinner not long ago, and FMIL told FI that the host line shouldn't be my parents' names, because she was going to pay for it. She definitely did not say anything to either one of us about her change of heart. While it is nice of her, I feel like that would be tacky since the invites have my parent's names as hosts. Also, my parents have already counted and planned on hosting it. FI says we should just let MIL pay, but I disagree. Thoughts?