I need help with this relationship problem?

Me and this girl, we dated for 7 months, December to July, and just broke up. We are sopres, so 7 months is a long time to most people. We loved each other to death, but then one night, July 5th, we broke up. The reason we broke up was because we both believed that the other one cheated on them. A week after we broke up, we talked it out, and it turns out that there was no cheating. Now it's July 20th and we arranged a date to meet up and say our farewells, but i know that she still likes me. But i don't know what to say to her to get us to go back out. We've been through a lot, once, we snuck out and went onto one of her neighbor's trampolines and stayed there all night. I was the most romantic thing, So, back on subject, i can't decide if it would be better to move on than date her again, i need advice