Coincidence???

I am not really sure how to start off, I can't think of anything whitty or funny because honestly I am still in shock from the entire experience.

Adam and I went to Adam's moms house for dinner tonight. Adams mom has a boyfriend that we will call "Clark" (name changed to protect the innocent or in this case - not so innocent?). So we are getting ready to leave after a lovely dinner and are saying our goodbyes and "Clark" approaches for the usual kiss on the cheek and hug only "Clark" goes in for a full on lip kiss. "Clark" had been drinking lots of wine so I am hoping he was intoxicated and that was the cause of his lapse in judgement that it is OK to kiss your girlfriends daughter in-law on the lips.

I would like to say that this was my first encounter with this male lip kissing and Adams side of the family however Adam has a cousin "George" (again to protect the not so innocent?) who has been doing the same thing for the past several years. Luckily he lives out of town and only visits once a year so it is not such a problem. However, "Clark" lives here full time and I have to see him several times a month so I hope that this was just a one time thing.

Survey/Question: Is it a coincidence that "Clark" and "George" feel the need to kiss me on the lips or do I invite this behavior in some unknowing gesture? Also, has anyone else experienced this?