U.S. singer Lady Gaga speaks during a news conference in Taipei
U.S. singer Lady Gaga speaks during a news conference in Taipei in this July 4, 2011 file photo. Reuters

There is strong speculation in the media that pop star Lady Gaga has secretly gotten married to her long time boyfriend Taylor Kinney after he was spotted wearing a silver band on his engagement finger. The rumour was started by "Chicago Fire" star Sophia Bush who is his co-star and is also good friends with Kinney.

Sophia posted a picture on her Instagram profile where she is seen hugging Kinney, who happens to be her co-star in the NBC series. "I'm REALLY excited to be on @nbcchicagofire tonight! Just about as excited as I was to see my buddy #TaylorKinney at our press day yesterday. Bear hugs are the best hugs," Sophia captioned the picture, which can be seen here.

The actress did not reveal any details about Gaga's marriage to Kinney but she posted the following hashtags which happened to reveal about the ring he was wearing. "#ChicagoFire #ChicagoPD #ThatsHisPersonalRing #NotForTheShow #EveryoneCalmDown #LindsayAndSeverideArentMarried," revealed the hashtags by the actress.

"That's His Personal Ring," read the hashtags when decoded adding, "Not For The Show', 'Everyone Calm Down', 'Lindsay And Severide Aren't Married.'" Kelly Severide is the name of Taylor's character in NBC's series "Chicago Fire" while Sophia portrays Lindsay. The actress clearly states that the ring worn by Kinney is not for the series but has some significance in his real life.

In July this year the "Monster" singer was spotted doing window shopping for wedding gowns with her mother Cynthia Bissett in Toronto, Canada and their pictures can be seen at Daily Mail. Gaga and Kinney have been dating each other since 2011 and the 28-year-old songstress has earlier expressed her desire to get married to him in Space in 2015.

Gaga has been known for her unconventional dressing sense and doing something extraordinary to catch the public eye. The singer has reportedly sought help from Sir Richard Branson to get married to Kinney on Virgin Galactic flight, reveals The Reporter.

The "Do What You Want" singer also has plans to perform in Space by reportedly spending $250,000 per seat on Richard Branson's flight. "I want to challenge myself to come up with something that will not only bring everyone together but will also have a message of love that blasts into the beyond," Gaga said on her desire to perform in Space.