Well you have already acted in such a way that she knows you like her for sure. I'd just keep contact to a minimum for now, then if the breakup happens have plans with other girl(s) for like 2 weeks. Don't give her any weekend time that's for sure. No immediate gratification by doing what she wants. Maybe see her on a Wednesday or something, just eat something simple or something. Then gradually move her into weekend time if she behaves well enough to earn it. She has to understand that she is competing for your time with another woman.
Since she already knows that you like her, reversing that may come out to harsh for her unfortunately. Rather make her compete for your time with another woman that you are also attracted to. Like that you can maintain that you like her, but this awesome girl you are dating is taking up your time. When she asks you what your doing tell her you are going to dating places (beach at night, cool restaurants, live shows) but leave out with who. So she has to figure your going on a date herself. By telling her the place, you are showing her you will have fun together if she ever makes it into your weekend time slots.
