My fiancée went camping for a week with a group of friends. When she got back she told me that after they got there she learned there were only 3 beds in the cabin for 6 people and she shared a bed with one of the guys who was there. The first couple nights they stayed on their own side. Then one night they were all really drunk and she said that they played truth or dare which turned to making out with different people, which left her turned on and when they went to bed she cheated on me. The next night she said she was going to just sleep on the couch and was drunk again and stuff happened again with another guy who was there.
I should say that she told me willingly and with much remorse when she could’ve easily hid it from me. Also I am currently on active duty and we’ve been long distance since November and will be until September.
We’ve been together a long time and neither of us want to end the relationship, but how can I rebuild trust with her after something like this? Any advice I’d appreciated.