The couple started dating in the summer of 2012 and fans were rooting for this relationship to be one that would have a very happy ending.
However, there is always going to be heartbreak in Hollywood, the shocker here is that this isn't even recent news.
The Once Upon A Time actress is so good at keeping a low profile that the press didn't even realize that she had been single for four months already!
That is, not until a source revealed to Us Weekly, "They broke up at least four months ago. They have gone their separate ways — no bad blood."
Another source reportedly added, "They just grew apart."
This is not the first failed romance with a co-star that the 34-year-old beauty has had. Morrison appears to have a bit of a pattern when it comes to dating co-stars, and was previously engaged to her House co-star Jesse Spencer in 2006 before the pair decided to call it quits just one year later.
Actually, her ex-boyfriend Stan has the same habit, having previously dated his co-star Leighton Meester when he appeared on the hit series Gossip Girl.
We wonder who this former couple's next co-star/lover will be? But for now it seems that Morrison's only hookups will be on the set of Once Upon a Time.
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