The Dance of the Garobos

Several day ago while staying at a friend's house, I walked into the guest bedroom to see this. Here in Mexico we have two common lizards, the green Iguanas and the gray/black Garobos. I'm not sure what their actual scientific name is but the locals call them Garobos. They typically inhabit roofs where they can be a pest because they love to burrow underneath the Spanish tiles, disloging them.

I was not sure what these two were doing, but when I went into the room the next day they were still there. They were hanging on the sliding screen door and the only way for me to get out there was by sliding the screen door. When I did that, they stayed exactly where they were and they let me take pictures of them without moving. As I was going back in, I noticed that there was a very tiny, inch long Garobo on the tile floor. Clearly the larger Garobo was giving birth. Was the other Garobo the father? What was his role in this. Do Garobos form matrimonial pairs? Just an interested friend? If anyone who reads this has any knowledge of tropical, coastal, Mexican lizards, I'd love to know more about what what really going on here.