Did I make the wrong move?

Been seeing this girl for a couple months, and we've started being physically intimate (cuddling, hand holding, etc). Next week we have plans to have a movie night at her house because her mom will be in another state and it'll give us a chance to be intimate like this for hours and not have to worry about her mom walking in on us.

Now, neither of us want to have sex. Waiting til marriage type deal. Since we're going to be alone for hours, physically intimate, I asked her the other day if we could chat about it so she knows I don't plan on doing anything sexual because I feel it is my responsibility to say it. I don't want her thinking that I'm going to try or do anything bad. We briefly talked about it before that neither of us wants to do anything like that, but I just to make sure I'm crystal clear about it. I want her to be able to trust me. She said that she loves me so much for wanting to talk about it with her... but I'm having a bad feeling.

I'm paranoid that she might think that I DO want these things because I wanted to talk about it specifically, and that I may have potentially scared her off. We're seeing each other tomorrow and that's when we planned to talk about it, but I can't help but think I ruined things. She didn't say anything to make me think this way, so maybe I'm just overthinking. I just want to do all the right things, but I'm afraid being this specific about not wanting to have sex was the wrong thing to do.
Did I make the wrong move?
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