Could you ever forgive a spouse or partner from cheating on you?

In my personal experience, I have actually tried both forgiving and not forgiving. Although these were only my girlfriend and not my wife. I would have to say not forgiving is better in this situation. The ex that I forgave ended up taking me for granted and we eventually broke up cause she thought that in an case I would still forgive her if she cheats on me again. The other ex which I never forgave has never gotten over our relationship. Whenever we had the chance to talk she would always tell me that she regretted the things she did and if only I could give her the chance she promised to be faithful. In both cases though they still both cheated on their succeeding relationships. That is why, in case if my spouse or partner would cheat on me I would never forgive her cause I always believe in the saying that a "Leopard doesn't change its spots."