Let me tell you Kunilingus as soon as me an my hubby get a spare second we are ripping eachothers clothes off.. and I too am almost constanly thinking about sex.. im wet all day long everyday..there is nowt wrong with that at all.
There is nothing wrong with exploring you curiosities if your wife is fine with it...
I would say have a chat with her about it... she may have a few fantasies of her own!!