Word for word. If she is interested in you, she sure is going to want you to ask her out again right away. If she isn't all that interested, that's when it is a turnoff.
Right after my first date with M he texted when I got home and said he had such a great time and would love to do it again. I had such a great time, I was thrilled he said that right away! He went for what he wanted, and he showed it was me.
That's many and attractive, and it has yielded very positive results for him:)