AFL star Jack Watts is at the centre of a text message scandal after a series of conversations with women sent from his phone were leaked online.

Watts' club Port Adelaide confirmed to Daily Mail Australia they were aware of the text messages and their content, and are investigating them.

Screenshots of 20 texts which appear to have been sent from the mobile phone of the 27-year-old key forward have been widely circulated on social media in recent days.

However, it is not known if the text messages - which include references to drug use, the hiring of exotic dancers and sexual relations - were sent by Watts himself.

AFL star Jack Watts (pictured) is at the centre of a text message scandal, after a series of conversations that appear to have been sent from his phone were leaked online

It is not known if the text messages (pictured) - which include references to apparent drug use, the hiring of exotic dancers and sexual relations - were sent by Watts

The text messages were allegedly sent between late 2017 and early 2018, at which time Watts is understood to have been in a relationship with Sophie Hunt.

That romance is believed to have ended in recent weeks and Watts is understood to currently be on leave following the end of the footy season.

The recipients of the messages included mates, women and an adult entertainment agency.

An Adelaide woman, whose phone number is listed on the messages, confirmed she had been romantically involved with Watts earlier this year.

But she said she knew nothing about the texts being shared online until she was contacted by Daily Mail Australia.

'What? No, I had no idea about any of this,' the woman said.

'I haven't spoken to him for months. We met when I was living in Melbourne.'

In one of the messages the sender appears to make a reference to taking illicit substances, writing: 'I just want to do lines off t**s'.

Daily Mail Australia is not suggesting Watts has used illicit substances.

In one text message sent from Watts' phone, the sender writes: 'I just want to do lines off t*** and then I'll be happy xoxox'

Port Adelaide FC confirmed they were aware of the messages and are currently investigating

At the time the text messages were sent Watts (right) is believed to have been in a relationship with Sophie Hunt (left). The couple's relationship is believed to have recently ended

An Adelaide woman whose phone number is listed among the messages confirmed she had been romantically involved with Watts (second from left) earlier this year

In other messages, one woman is asked if she can 'send something dirty'.

Woman: 'Can't wait to f*** you later'.

Watts' phone: 'Haha I know that but can you send me something dirty?'

Daily Mail Australia has chosen not to publish the woman's explicit response.

In further text exchanges with a different woman, the football star is referenced by name as they discuss oral sex.

'Too much fun... terrible terrible,' the woman writes, to which a response comes from Watts' phone: 'Terrible fun'.

Previous text conversations indicate that the same woman had visited the sender's home late at night.

'So do you want a cuddle buddy or not? Can you sneak me in?' the woman asks.

'I can't have my housemates knowing... you know where my room is?' the response from Watts' phone reads.

In one of the messages, a woman is told she will have to sneak into the house to avoid the sender's housemates discovering their romance

Watts is mentioned by name in one text exchange believed to have been sent from his phone

Messages were also sent from Watts' phone to an adult entertainment agency where dancers with 'big boobs' are requested (pictured)

Messages were also sent from Watts' phone to an adult entertainment agency in order to request dancers with 'big boobs'.

Watts' phone: 'Hey... just wondering if there are any girls available tonight?'

Agency: 'Yes we can organise a XXX vibrator show (30 mins) for $350 for tonight?'

Watts' phone: 'We just basically just want a bit of company for a few hours, don't even need a show haha but yeah that would be awesome. Big boobs?'

The owner of the agency confirmed the legitimacy of the text exchange to Daily Mail Australia, but said he believed a booking did not eventuate.

Watts (right, pictured with former Melbourne teammate Max Gawn) is understood to be away on leave following the end of the AFL season

Watts was the number one pick in the 2008 AFL draft and played 153 games for Melbourne. He was traded to Port Adelaide in 2017, playing 19 games (pictured) in his first season with them

Watts was the number one overall pick in the 2008 AFL draft and played 153 games for Melbourne, being much maligned for failing to live up to his potential.

He was eventually traded to Port Adelaide in 2017 and in his first season with the Power played 19 games and kicked 18 goals.

Watts' player manager Paul Connors also refused to comment at this time.