She was in jail for 11 months. He could be someone in the bail bond business, a guy she strung along as a friend who moved on, or she could be in didguise with Cora’d potion (OUAT polyjuice if you know harry potter), like peasant Regina. So maybe it is not someone from her life at all.
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“If I had a world of my own, everything would be nonsense. Nothing would be what it is, because everything would be what it isn't. And contrary wise, what is, it wouldn't be. And what it wouldn't be, it would. You see?” -- Lewis Carroll, Alice's Adventures in Wonderland & Through the Looking-Glass