Is my ex really evil or am I overreacting?

I was in a relationship with her for 10 years she's showed absolutely no interest in my best friend. But recently I have moved to Canada for studying and work, she made an ultimatum to me that I gave to leave Canada and come back to her or else she's going to marry my best friend. I told my best friend that she's saying this. He said he will NOT marry her and reassured that our friendship is worth more than her.
Just a few days ago I found out they got married in secret months ago and just now made it public. I was going to bring her here with me we could live a better life. But now she's done all this out of spite... Is she evil... Throws away a 10 year relationship over some unrealistic ultimatum and even marry's my best friend out of spite. What a bitch.
Is my ex really evil or am I overreacting?
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