Relationships are never linear; there are ups and downs, but usually, you can find a way to meet in the middle and work things out. For this unfortunate boyfriend and girlfriend, things unexpectedly took a turn for the worse, and there's no going back. Cheating on your partner is perhaps the biggest form of betrayal, and you risk never returning to how things were. This man caught his girlfriend cheating just before the holidays, making the hurt that much more painful. You can throw holiday che…