Former Bachelor and Bachelorette contestants are slamming Jason Mesnick for dumping fiancee Melissa Rycroft for Molly Malaney on Monday’s final,

On his Facebook page, season 10′s Andy Baldwin wrote: “Andy is glad when he was the Bach. He was a man and didn’t sell his soul and cave. Such a sellout.”

Later, he posted: “You do NOT break up on national television. That is the opposite of a gentleman.”

Trista Sutter — the only reality star to wed after the show — was also shocked that Mesnick (who has a son, Ty, 4) “would propose to one woman, introduce her to his child and then hook up with a new woman.”

“How could you go from being engaged to someone, to kissing someone else on the couch?!” she fumed to Momlogic.com. “He doesn’t deserve to walk away scot-free.”

“What disappointed me as a mom is that he introduced both girls to Ty,” she went on. “Melissa was around, and now she’s gone. What is Ty going to think?”

Sutter — who is expecting her second child with husband Ryan — said she sent a text message to Melissa that said, “‘I’m proud of the way you handled it.’”

Added Sutter, “She deserves so much better! Melissa hasn’t been able to say anything about this until now, so I think she’s relieved. I am happy she can finally move on. As far as I’m concerned, this is a blessing in disguise. Now she can find someone who truly loves her.”

Sutter called Mesnick “obviously fickle” and warned Molly against jumping into a relationship with him after the way he treated Melissa.

“How can you trust him?” she said.

On Monday’s Jimmy Kimmel Live!, Mesnick defended his decision to dump Melissa.

“How was I supposed to lead somebody on, or keep on going, if it really wasn’t there?” he said. “That’s the honest truth.”

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