ALWAYS assume they adopted the little one. The guy may get really pissed otherwise.I saw a young white couple at Disney World yesterday with a months old black baby in a stroller. It took every ounce of will in me not to ask them if it was hers and a black boyfriends, or if they were just fostering it.
Now, if he pauses and says, "Ahh, Yeah, we adopted"
Then maybe, but it is usually just best to mind your own business.