describes couples that are effusively and disgustingly gooey. the type that you see in public places but wish you did not see in public places. typical behavior includes batting your eyes against your partner's cheek ("butterfly kisses"), slow dancing in the dark on a beach, cuddling, cooing, kissing, twitterpating, oozing, and doing all other things googly.
(v) to google
look at that couple feeding each other milk duds over there! so googly...