Cheapest I've found for Viktor & Rolf Flowerbomb Eau De Parfum at 100 ml and i've done some shopping around.
The code you need to enter at checkout is SCENT50 to get £10 off any £50 spend. Delivery is free. Topcashback are also offering 11.55% cashback, which should be another £8.55 back, making it around the £65 mark.
This is not the cheaper and weaker smelling Eau De Toilette.
Yes, it is quite an expensive smell however it is Christmas after all so why not spoil your other half.
The 50 ml version comes out at £51.20, but its the 100 ml that has the biggest discount.