If you were trying to convey that you just want to find someone you can have fun with and if everything goes well, you're open to take things further, you fumbled.
If you only want something casual and she is not on the same page as you, then she might've saved you a lot of trouble by being so direct. You could play along just to get some buns, and some brehs on here will give you that advice, but IMO it's pathetic to compromise your integrity as a man and be deceptive for p*ssy, when there are countless women who are on the same page as you.
It's why I respect
@VertigoKnight approach. Only deal with women who want the same thing as you and who are compatible with your lifestyle.
No point overcomplicating things. This shyt is not supposed to be rocket science.