She thinks I like another girl better. What should I do?

So I have been talking to this girl Jacqueline for awhile now. We went out once and had a great time. However I have also been messing around with this girl Leanne for awhile since before I met Jacqueline. I think Jacqueline would make a good gf but Im not sure. Leanne is just a party girl not someone I could settle down with. Jacqueline knows about Leanne. Leanne has no interest in me we just mess around. Jacqueline seems to like me. So I wanted to see if Jacqueline would make a good gf. I told her to bring me food to work and then she would be my favorite girl. Her response was ya rite Leanne is. She thinks I like Leanne better. I would give up the hotter more fun Leanne for a great girl like Jacqueline. So she thinks I like the other girl better. What should I do now?