Looks like dude in the orange saw dude proposing and often times proposals come with a fancy expensive ring. Clearly an easy mark. As the orange guy walks up, you can see him pull mace out of his pocket which he then sprays in dudes face at a close range. However, instead of being incapacitated, proposal dude clearly has a strong paradoxical reaction to the mace and becomes the pure embodiment of rage in physical form. This proves to be problematic to the man in orange.