just ignore them, you both can stand on your feet and already professionals... as I quote on your post "in our society people appreciate woman to be younger than her man.."
Besides, it's not that the society is against it, they will not only appreciate the relationship...
So go on..the hell with that society! There's only few genuine love I hear everyday, why not make it happen...

"I don't go back on my words, that's my way of ninja"