No. They are not.

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.