AITA for Asking My GF to Split the Hotel Cost After She Invited Her Friends Without Telling Me?

So, I recently took my girlfriend, "Emily," on a weekend trip to a popular beach town. I booked a nice hotel room for us to enjoy a romantic getaway. Everything was great until the second night when Emily invited her two friends, "Lara" and "Kate," to hang out with us. She didn't tell me they were coming, and I was a bit surprised but went along with it.

Things got even more awkward when they decided to crash in our hotel room because they didn’t want to pay for their own. I was annoyed but didn’t want to cause a scene. The room was cramped with four people, and it definitely wasn’t the romantic getaway I had planned.

The next morning, I told Emily I wasn’t comfortable with her friends staying for free and that I felt they should chip in for the room. Emily got defensive and said it was rude to ask them for money since they’re her friends. I argued that it was unfair for me to cover the entire cost when I only planned for the two of us, and she invited them without consulting me.

Emily eventually asked Lara and Kate if they could help with the cost. They were taken aback but agreed reluctantly. However, Emily was still upset with me, saying I embarrassed her in front of her friends and that I should have just let it go.

When we got back home, Emily told our mutual friends what happened, and now some of them think I was being unreasonable and cheap. Others think I had a point and that Emily should have asked before inviting her friends to stay.

AITA for asking my girlfriend and her friends to split the hotel cost after they crashed our romantic getaway?