S.L.
I would do little sandwiches cut out into hearts or butterflies or something depending on your cookie cutters. Strawberry milk sounds good, but I also like a little sparkling apple cider with a few frozen raspberries dropped in or strawberry smoothies. Fruit tray with strawberry yogurt dip. Strawberry yogurt covered pretzels.
And I second using fancy plates and cups, that's probably more important than the food.