A SELF-CONFESSED swinger says she was invited on the Aruban sex trip with missing party girl Robyn Gardner but begged off. Gary Giordano--the man suspected of orchestrating Robyn's disappearance Aug. 2--had also invited Rebecca Toring for fun and games under the sun. Now, she tells the National Enquirer she's thanking her lucky stars. She said: "I just thank God I'm still alive. Gary invited me to Aruba, and if I had gone I would probably be dead now – just like poor Robyn."Cops believe creepy Don Juan Giordano--a failed Maryland businessman--killed Robyn for the $1.5 million insurance policy he took out on her
