Charmed: Piper and Leo get divorced?

Question

I missed several episodes and came upon the one where Leo is kidnapped by Valkyries. He and Piper are getting divorced? Why? What happens in Part 2 of the Valkyrie episode?

Answer 1

The above person is correct.  I totally love Charmed and own all eight seasons.  I hope they make a movie and bring Prue back!  If Grams and the mother came back at a whim, I don't see why she can't.  

Answer 2

After Leo became an elder, he wiped Piper's memory so that she would no longer be angry about it but when the memories came flooding back, Piper became angry and to squelch her pain, she became a Valkyrie.

Eventually, Phoebe and Paige were able to bring her back and get her to admit her emotions and in those moments, she realized she couldn't be married to someone who was never around. He had been gone enough as a white-lighter and now he would be gone even more as an elder. She told him he could see Wyatt (their son) as much as he wanted but did actually ask him for a divorce, although it was never finalized.

In the second part or possibly in another episode, a demon puts the sisters in a sleep spell and Leo hears Piper's subconscious cries. Piper realizes she still has a strong love for and connection to him and they end up making love and she gets pregnant, making Leo realize that his place is with her and their children, although he is still an elder.

It's a several episode ordeal. Just keep watching. You'll figure it out!