Dianna Agron behind Caroline Flack, Jack Street's breakup?

Caroline Flack, Jack Street

Hollywood actress Dianna Agron is reportedly the reason behind the split of the "Strictly Come Dancing" star Caroline Flack from Jack Street, her boyfriend of 18 months.

It is said that they both had an amicable split, but a cryptic Twitter message has suggested otherwise, reports mirror.co.uk. Last week, Flack, 35, wrote to her ex: "@jackb_street easing your guilt??? Fill yourself with glee jack."

Now it's emerged that the tweet, which was quickly deleted, could have been referring to the music manager's friendship with "Glee" actress Agron, 28, who played Quinn Fabray in the show.