It's interesting he says that, because every first time with any girl, even if they are not virgins, has taken place outside of Eternum (or in the case of Dalia, with her real body transported into Eternum by Orion), so it is kind of a moot point.
Annie was on her date at the hotel, Nancy was in the elevator, Nova was in her bedroom, Penny was on the Lamborghini, and Alex was in her new apartment.
I don't think anyone cares about Eva or Maat on this matter. Luna hasn't happened yet. The only exception to this is Dalia, whose first time was in Eternum, but it was her actual body transported inside by Orion's new powers. I thought Cari did it that way for this exact reason, so it is interesting to see him say it wasn't a consideration of his. I guess just a happy accident?