It could be that, or it could also be a way for someone to say they approve of your relationship without being so tacky as to say they approve of your relationship.

It can also be a way of saying that you’re hitting above your weight class, that you’re out of your league, And they didn’t really expect that you’d find someone as amazing as your girlfriend.

But in reality, yeah, it probably means that they’re attracted to her. But attraction occurs on many different levels and physical intimacy is just one.