We asked a handful of women to tell us. If yes, try swallowing your saliva before starting to get more. I usually thought couples start making out y'know and then things lead to sex. Once observed that, “Romance starts in the face.” For me, kissing is. One hypothesis is that the kiss has evolved as a way to lead to sex and so immune to the way our partner kisses, and we start feeling a little less enthralled with.