When the two sides are unfamiliar, just ask directly. There are many situations. Maybe he has watched you for a long time and never approached you, or he doesn't have enough connotation and doesn't know what is the most important thing for a person. Or he's direct.
What you think depends on your feelings and judgment. He may be frivolous, superficial, straightforward, or just a way for him to communicate and make friends.
What kind of person he is depends on what you know after your future contacts.