I unfortunately cannot say what is a dupe for it - what I can say is that you should check with your local mac stores.. I picked one up about 2 weeks ago and they had a few left. Other thing you can always try is the gone but not forgotten program - its only been a few months and the blushes from COC didn't sell out and were still on the website up until only a little bit ago... hell maybe even calling the cs ppl to place an order - maybe they will know if theres any still in stock. It's worth a try right?!
BTW - blooming is a really nice color - I don't blame ya for trying to find another - Good Luck!