The 40-year-old '90210' actress and her 'Twilight Saga: Breaking Dawn - Part 2' actor estranged husband announced their plans to divorce in March.
Speaking to a therapist on her reality show 'Jennie Garth: A Little Bit Country' she said: ''It's weird and sad, but I really realised through this whole experience how much I loved him, how deeply I loved him and how deeply I loved us.''
The two have children together - Luca,14, Fiona, nine, and Lola, five - and Jennie was against Peter's idea to file for a legal separation.
She continued: ''I think with any sort of rejection, you're angry that you weren't enough for that person. So I don't know if I'm angry at myself for not being enough, or if I'm angry at him for not considering me to be enough.''
Talking about his decision to end their longtime union, she said she hoped they'd be together forever and added that his filing surprised her.
When asked if she'd like to share her strong feelings with her ex, she said expressed her desire to.