The actress, who ended their five-year relationship after Seann cheated with dance partner Katya Jones last week, "liked" a number of tweets condemning the comedian's appearance on It Takes Two.
One post read: "
@seannwalsh @Mrs_katjones why did you appear on TV to make people feel sorry for you?
"You haven’t owned your sh*t at all – you should stop
@bbcstrictly out of respect – and apologise to @Beckshumps neither of you apologised to her."
Another of her liked tweets said: "He could have at least mentioned
@beckshumps name instead of skirting around the fact he hasn’t apologised to her, just for the ‘hurt he has caused’.
"Also the way he says ‘the people who know me most.. and love me..’?? um are you suggesting she never loved you
Rebecca's liking spree came after Seann, visibly agitated and uncomfortable, made his first TV appearance since pictures emerged of him kissing Katya on a night out in London.
Sitting next to the Russian dancer on the show, he told host Zoe Ball: “I think that, obviously I’m sorry for the hurt that I’ve caused.
“We were getting on well, we were having fun. We had a couple of drinks and made a huge mistake and I regret it deeply.
“I think first of all I would rather not be having to address this publicly, but I feel like I have to. I’m not perfect, far from it. Our relationship wasn’t perfect. That doesn’t mean I wanted it to end the way it finally did.”