I think it's probably slightly more than that. Even without love, people would still be making babies. That is more about lust.
I think love is more to do with bonding and staying together, for some people. We tend to love our partner, but also our offspring, so it seems like love is something to do with forming families or communities.
Another question might be: do Thai people experience love as we do in the West, or does it vary by culture? Thais appear to love their families, and their children, but when it comes to romantic partners, it seems a lot more about provision than love.