who says you have to forgive him? its human nature to want multiple mates, which is an obvious fact seeing as he cheated in the first place, i really dont see how god caused this because it has no benefit to either party, unless of course you think god isnt always kind, then of course maybe it is. if i were you i would see a therapist or a psychologist, they are good at helping you sort out your many feelings which i am sure are racing through your head this very moment. if you truly love him and think he will change then i suggest working with im to correct his behaviour which can be done, its been proven you can work against your natural drives and instincts created by your genes. hence when we use birth control even though we were made to have sex to procreate but with birth control we knowingly have sex without hoping to procreate showing that we can go against our genes. anyway before i start to ramble, make sure you don't do anyting rash in the heat of the moment, because you may regret it later, i would just think things through and probably have a psychologist or therapist sort out your feelings. sometimes just someone who listens is the best source of solutions.