?

My mom has been deceased for 8 years. I constantly dream that my dad thought she was dead, started seeing another woman and mom didn't really die, but dad continued to see this woman. There are two houses involved, nothing I've ever seen. I am always very angry with my dad over it. I dream this over and over and it is bothering me badly. The other woman that my father dated briefly after my mom died is always in this dream, she too has passed but long after her and my father dated. Mom and Dad were married for 47 years and never had outside affairs, to be, the perfect marriage. I yell out loud while having this dream in my sleep. I just don't understand.