Poohgirl said:
Kissing complete strangers...drunk

These are friends I've known for 13 years. I am in complete shock they would do something like this...I don't even know what to say.
I totally agree!!!!!
If my BF/Husband ended up hot-tubbing and smooching with other women just cause he was having a beer with a buddy, and the opportunity arose....
Definately NOT a forgivable mistake. And, your friends BF did this right there under her nose!!!! Right along with a mutual 'married' friend!!!! While he left her ALONE when he and your friend were supposed to be on a getaway spending time TOGETHER!!! Your friend, and her feelings, are NOT very high on this BF's list.
Nope, not a 'mistake'... No way, no how!!! Nothing but complete emotional and moral bankruptcy. Pure and simple.
And, poohgirl, this friend has NO ring on her finger. NO marriage certificate. Therefore, NO nothing to begin with!!!! Sorry, but she is getting just what she bargained for.
NOW, how you deal with your DH's defense of this incidence... Is he not smart enought to at least PRETEND to agree that this behavior is not acceptable, to you, his wife????