<human>: My fiance was in Vegas with a friend who is celebrating a birthday yesterday. She went to a evening pool party (Eclipse) and her 2 girlfriends and during the event, the girls were approached by security guard that a group of Australian guys wanted to hang out.

The other 2 girls are single so they are all hanging out with these guys at the pool party. Its ends and they get invited to the Penthouse hotel room that these guys are staying and they all decide to go. 

Apparently, they are there for a few hours and one of the guys makes a move on my fiance and starts kissing her. She said they kiss for 2 seconds and tongue is involved. She says she gets up and leaves. 

Today she calls me and tells me what happened that she feels horrible, guilty, sorry and said it was a bad decision to go back the the hotel room.

I'm hurt and don't know what to do. I love her so much and if everything is true I want to give her another chance. 

If she had sex with him id be done, but since it was a kiss from a scumbag who was trying to get with her i think im willing to work it out. This is a girl i was willing to marry and wanted to spend my life with. It just hurts man.
 
Just looking for advice/insight from maybe someone who has a similar situation. Thanks!

Can you provide a brief overview of the text?
<bot>: Fiance/girlfriend of 4 years kisses a guy in Vegas during a night out with her girlfriends. Calls me the next day and confesses.