I paired my successfully. I have a 4" female for the longest time by herself. So I took out the female and put her in the sump, then put a 1.5" male in the DT. Naturally, the small male started hosting the anemone. After two weeks, I took out the female from the sump and put her in a critter box as gumbii mentioned right next to the anamone in the DT. The female stayed in the critter box for another two weeks and was really pissed about someone stole her anemone.
Once I released the female into the DT, she went straight to the anemone and totally kicked the male's butt and got her anemone back. The male then spent two or three more weeks hiding somewhere nearby but would move closer and closer to the female. The female would chase him away from time to time but finally took him in. A happy ending.
I think if you take it slow and make sure the female doesn't kill the male at the instant they meet, you are half way there.