God, I love Fuuka. I would take her to a movie and lean against her as she leans against me. Maybe I'd feed her some popcorn. All to set the mood. Then, we'd walk home and I'd find something to distract her, maybe a shop, while I get some flowers. I'd give them to her, and when she takes them out of my hand, the people who work in the store would turn down the lights and everyone in the area would watch us, and she'd see a little jewellery case.
Opening it to show an amazing ring, I'd say "Fuuka. Will you marry me?"