LOL. As usually more stupidity from you.
A Kings dharma ranks higher than a husbands dharma. Its a classic 'rights of the many over rights of a few' argument.
Rama was human and he had human weakness. He overcame those weakness. They is he is maryada purushotam
Not a man without weakness, but a man who can overcome those weakness.
First Devi Sita insulted Lakshman and forced him to disregard his word he had given to Ram, when she forced him to go out and check on Ram when marecha made a fake cry for help.
Second Devi Sita crossed the Lakshman Rekha and by doing so started the whole chain of events that lead to the death of thousands. She had to pay the price for her folly and set an example for all.
Lord Ram did not tell Sita to take agni pariksha, He chastised Sita for her folly and her subsequentely being forced to live with Ravan. Devi Sita's then chose to set an example and took the Agni Pariksha on her own free will. She was the queen of Ayodhya and any slander against her name was not acceptable as it would send the wrong message to the people of Ayodhya.