A wrestler and a woman reported to be his ex-wife have been arrested after being caught having sex at the Wisconsin State Fair.

Robert Beasley, 28, and Desiree Anderson, also 28, were filmed engaging in the lewd act on the bleachers at the State Fair Park in Milwaukee on Saturday.

A horrified bystander filmed them and shared the footage on social media.

After realizing he was being filmed, Beasley continued thrusting and waved when the person behind the camera told him to 'say hi to mom'.

The pair were both taken in to custody by Wisconsin State Fair Police and were charged with public fornication.

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Robert Beasley, 28, and Desiree Anderson, 28, were filmed having sex on the bleachers at the Wisconsin State Fair Park on Saturday

Footage of the incident circulated on social media over the weekend but was removed at the request of state fair organizers who described the incident as 'appalling'.

Others who attended the fair were disgusted by the pair.

'We're here for a horse show or a dog show -- not to make babies,' one told Fox 6 in Wisconsin.

Beasley however seemed unrepentant on social media and suggested to critics that they did not know 'the real life s*** that people are going through'.

Anderson and Beasley were both arrested and were booked in to Milwaukee County Jail

The 28-year-old is a part-time wrestler. He wrestles under the name Bobby Valentino and his character is referred to at matches as 'the gay bar superstar'.

The Smoking Gun claims Beasley and Anderson were at one time married.

Milwaukee County Sheriff's Office could not immediately provide details of their arrests on Wednesday morning.

Both were booked into county jail but are both believed to have posted their individual $400 bonds.