Happy vs. Hostile Environment: How To Deal With Having Your Divorced Parents At Your Wedding
The solution
If your parents divorced because one of them was unfaithful, it’s not unreasonable to request that the mistress/lover does not attend the wedding. If your parent has been with that person now for a long time and is even happily married to him/her, you may need to ask the parent who was cheated on to do you a solid and let them come to the wedding.