RFK Jr and Cheryl Hines's wedding to go ahead despite affair allegations

Robert F Kennedy Junior will marry actress Cheryl Hines within weeks - despite allegations that he cheated on her, MailOnline can reveal.

It is claimed the environmental lawyer had an affair with Chelsea Kirwan, the estranged wife of surgeon to the stars Laurence Kirwan behind the back of his fiancée Cheryl Hines.The pair were pictured together at an event in Seattle in April 2013 and their friendship is believed to have spanned the past two years.

However, a source confirmed Bobby and Cheryl are most certainly still getting married.RFK Jf, who is in Cuba on work this week, and Curb Your Enthusiasm star Cheryl are believed to be tying the knot at the Kennedy compound in Hyannis Port, Mass, this summer, during the family's annual reunion. Close friends and family, including RFK Jr's mother Ethel Kennedy, 86, will be in attendance.

Cheryl, 48, is said to be extremely close to the Kennedy scion's six children, in particular his teenage daughter Kyra, 19, who has been living with Cheryl in Los Angeles following the tragic death of her mother Mary Richardon in May 2012.

MailOnline told this week how Bobby, 60, and Chelsea, 42, met in a gym in Armonk, New York. Chelsea, a mother-of-four, is currently going through a bitter divorce from Laurence Kirwan a high-profile surgeon with offices in London, New York and Connecticut. And a source close to Prof Kirwan, 62, told MailOnline: ‘He was well aware that his wife and Bobby had a friendship before their split and that they have had ongoing telephone calls.’It is believed a friendship started well before the Kirwans separated on July 4, 2012 - and a source reveals how Chelsea’s cell phone records show she was speaking to RFK Jr five times a day in August 2012.

In 2013, the New York Post published extracts from RFK Jr.’s private diary, leaked by an anonymous friend of Richardson. In it, Kennedy detailed daily activities, speeches, political activism and the lives of his six children in the year 2001. But he also recorded the names of women — with numbers from 1 to 10 next to each entry. The codes corresponded to sexual acts, with 10 meaning intercourse, Mary told a confidant. There are 37 women named in the ledger in 2001, 16 of whom get 10s.