Former Bachelor and Bachelorette contestants are slamming Jason Mesnick for dumping fiancee Melissa Rycroft for Molly Malaney on Monday's season finale.

On his Facebook page, 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, Baldwin posted another message re: the shocking Bachelor finale: "You do NOT break up on national television. That is the opposite of a gentleman."

Navy Lt. Andy Baldwin starred in The Bachelor: An Officer and a Gentleman in Season 10. He chose Tessa Horst but broke up with her a few months later.

Elsewhere, Trista Sutter - the only star to wed the person they chose on 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. "He doesn't deserve to walk away scot-free."

"What disappointed me as a mom is that he introduced both girls to Ty ... Melissa was around, and now she's gone. What is Ty going to think?"

Trista Sutter - who is expecting her second child with husband Ryan - said she sent a text message to Melissa Rycroft after the show.

It said: "'I'm proud of the way you handled it.'"

Sutter went on in her posting on momlogic.com: "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 Jason 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 last night/this morning's Jimmy Kimmel Live, Jason Mesnick defended his decision to dump Melissa. Check out the interview below ...

[video url="/videos/jason-mesnick-on-jimmy-kimmel/" title="Jason Mesnick on Jimmy Kimmel"] [/video]

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.