On this week's Adult segment, one letter writer asked whether she should reveal that her friend's boyfriend has been sending her flirty Tinder messages.

“I’m newly single and I’ve been scrolling and swiping on Tinder,” she told Moncrieff.

“The problem is that I came across one of my friend’s boyfriends on the app – I've always thought he was a ride.

“So, I swiped right, assuming they had broken up.

“I asked in the girl’s WhatsApp group and mentioned we’d matched, and apparently, they’re definitely still together.

“His girlfriend is a friend of mine – not a close friend, but still, someone I would know well from over the years.

“So, should I tell her that we matched, and he’s been sending me outrageously flirty messages?

“I feel like she’d be really annoyed because obviously, I’ve been sending pretty racy stuff back, but I genuinely thought he was single when I was doing it."

A Tinder user checks notifications in a 2016 file image. Picture by: TNS/SIPA USA/PA Images

Broadcaster Barbara Scully said she thinks the letter writer has a responsibility to call this guy out for his behaviour.

“When I first read this, my first reaction was the usual thing that we say; ‘Oh look, just leave it, stop the communication but it’s none of your business’,” she said.

“Then I changed my mind, and I thought, ‘He’s getting away with this’ - and therefore I think she does have a responsibility to call him out on it.

“I think she needs to let him know that she knows he’s still involved with somebody and therefore, she takes a very dim view of him being on Tinder and sending her flirty messages.

“I think she needs to then stop communication – I don’t think she should tell his girlfriend.”

'He's going to do the same to you'

Actress Mary McEvoy disagreed, and said that “in solidarity with another woman”, the letter writer should tell her friend about the situation.

“I think she should call him out, but I also do think she should tell the girlfriend, because she’s been truly made a fool of and he’s treating her with great disrespect and I think she should know,” she said.

“But also, if you’re looking for something from him, he’s going to do the same to you - he’s a blatant player.”

Barbara said the letter writer should gather evidence of her innocence before going ahead with any sort of confrontation, in case the boyfriend tries to turn the story around on her.

Main image: Cheating boyfriend.