How do deal with ex getting married after fresh break up?

It has been three days but he is already planning to settling down. I understand though, he 28, just finished his masters while im 21, still on my
undergrads. Im still a human though, so it hurts and I cant help it even though i broke up and left the toxic relationship. Perhaps after the break up, he called his parents and asked them to find potential partners. Proposals has been lining up for him