Ha, that's pretty rare for me for rooted opuntia pads. They usually don't pop flowers till they get a bit more height for me, maybe responding to the small pot? I grow a bunch but I still don't quite know how they work..
Yes I was totally surprised by that. Even my rooted Opuntia Sunburst that I potted up a couple months prior to that one has no signs of flowering yet. I will say the Pina Colada though is a lot more chunky and substantial than the Sunburst.
Glad your DF made it through the cold K-Rimes. What varieties you have going on over there? I have a yellow one that I got as a freebie from a seller and it was broken in bad shape, literally split in half and it was a small cutting already and I saved both pieces. I have another one that has pink flesh from a nursery here but not sure of that variety. Then I have a couple funky ones that I daringly risked rooting during the cold rainy winter and they are starting to put out new branches.
Honduran Moon Torch:

Black Afrikanis:

Both are probably a solid couple years from flowering but at least they are rooted and growing.