The phrase "alleged relationship" is correct and usable in written English.
It can be used when discussing a relationship that is claimed or asserted but not yet proven or confirmed.
Example: "The investigation focused on the alleged relationship between the two parties involved in the scandal."
Alternatives: "purported relationship" or "claimed relationship".
The comments may even not have been about Sharapova but the Russian hit back, taking aim at Williams' alleged relationship with her coach Patrick Mouratoglou.
Bradley, now a bloodstock agent, will be questioned over his admitted passing of privileged information and alleged relationship with the suspected drugs smuggler Brian Wright.
The articles and images included coverage of the actor's alleged relationship with Balthazar Getty soon after she broke off a relationship with Welsh actor Rhys Ifans.
It covered the alleged relationship between LNS - as married Terry was referred to in court - and another woman, details about it, including certain specific consequences, information leading to their identification and any photographs.
The attacks on Quinn escalated when an ex-boyfriend posted a tirade on a blog and exposed an alleged relationship that he claimed she had with a journalist who wrote about the game.
A series of articles and pictures were published in both papers that included coverage of the actor's alleged relationship with Balthazar Getty soon after breaking off a relationship with Welsh actor Rhys Ifans.
We learned of Franklin D. Roosevelt's relationship with Lucy Mercer, Dwight D. Eisenhower's alleged relationship with a military aide, Kate Sommersby, and John F. Kennedy's with several coquettes including, if rumors were believed, Marilyn Monroe.
In response, MacLean emphasized the not entirely consensual nature of the alleged relationship.
From this alleged relationship she bore her first and only child, Oskar.
The suit also refers to the Feb. 27 arbitration, calling it "bogus" and listing it as one of multiple attempts to block Clifford from discussing the alleged relationship.
The California representative also addressed Trump's alleged relationship with Russian President Vladimir Putin and the country's hacking of the U.S. election.
