they are like jack and sally. they are like mickey and minnie, and maybe like you and your girlfriend/boyfriend. they spent a whole day together. they talked and laughed like they never ran out of topics to talk about. they laughed laugh, laugh, laugh, laugh.
she enjoyed every little things about him; his joke, his random talk, his voice, his eyes, his smell, his ex's stories, his motor-cycle he admired every little things about her; her joke, her random talk, her ideas, her wishing, her compliment, her voice, her hair.
are they in love each other? yes, they are. are they a couple? no, they are not.