Quick question about breeding boas?

Let me first say, I am not breeding anything. I have a friend who is. I was with him when he introduced his male and his female ran right over and tries to stay on top of the male. Is this normal or a warning sign? He did not seam worried. Within a moment or 2 you could see her rubbing her parts on him asking for him to get with her. Was she just super interested? They both were virgins before now. Just trying to learn as much as I can. I would have thought the male would have been the one perusing the female?

Is he sure that they are a pair. Sounds like 2 males to me with one showing dominance, or he may have the sexes mixed up, and the one on top is actually the male and the other one the female. And notvthe way around that he actually thinks they are.

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