No, LuAnn did not cheat on Jacques with the Johnny Depp lookalike. She had a ride home with him, but she is in love with her boyfriend and would not have an affair, especially in a house full of cameras.
Yes, there was a little drama between LuAnn and Jacques because of the way the situation played out. It was a bit shocking for both of them, but LuAnn maintains that she did not cheat and it was just a white lie.
No, LuAnn did not bring the Johnny Depp lookalike back home to cheat on Jacques. She had a ride home with him, but she insists that they only talked and she is still in love with her boyfriend. The laughing in the house was unrelated to any cheating.