I don't know if I have an answer to love that matures from puppy D/s love to something else... But I can definitely say, I felt all the grade-school puppy love symptoms for the first person I ever played with regularly. I knew that any super emotional attachments were impossible, and totally "was ok with it" (of course i was lying to myself and it was awful!)... But I did the, OMG A TEXT!!!1 reactions, giddiness, mild infatuation... It's like how in movies, virgins get super attached to their "first." It totally happens even if you think you're a smart, modern woman and waaay above it