If the relationship moves forward, it's because he to lead toward commitment.
If a man tends toward an introverted personality, it’s even more important that you let him lead.
My advice will make a lot more sense if you're already familiar with the basic concept of letting a man lead and set the pace of the relationship.
Regardless of personality type, men are happiest when allowed to discover love at their own pace.
Sure, he’d be okay with having casual sex with her and hanging out until something better comes along.