Would you end things with your partner if they did this to you? Read Below?

Your partner invited you to an event with friends’ and you were excited to go , but come last minute your partner changes their mind and tells you they just want to go with their friends’ instead without you , so you say ok , being a little bummed out , but you tell them to have fun, to come to find out the truth , that your partners’ ex was going to be at that event as well? Would you dump your partner or would you stay with them?
Would you end things with your partner if they did this to you? Read Below?
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