Drunk girl all up on my fiancé

Hi guys I just need to rant. It was my fiancés birthday party tonight and one of his only friends decided to bring their new girlfriend over who mind you was already smashed face when coming over. She was wearing the skimpiest black shorts and tights. My fiancé was also wasted and still is so it's like talking to a wall with him. This girl seems nice at first until she went to hug my fiancé and literally for a minute had her leg hanging on him and her arm all over him. It pissed me off. He said he doesn't remember her being all on him but even his friends were like dude that's not right. I'm just pissed off and this girl was so slutty fleeting with him the whole time she was in my house! I just can't help but to think like what if he goes out gets drunk in public and some girls does things to him and he doesn't remember.... Like this literally is testing what trust I had in him.