my best frind and i

im a chef who was looking for a new job and found one so i celebrate with the other five members and came home a bit drunk and only to find someone in bed with my fiance but dont know who it was my eyes were quite blurry. i pass out because of the alcohol and a good friend of mine told me she knew who it was because he told her and it was my best friend/work college. so the following day i was mad and went to his work place and confronted him and he said it was true the funny part is that i didnt do anything about it just took a broom and keep pushing him with it, strange as it seems but i know my fiance would never ever do something like that or my best friend please help me get some results