A few months after the breakup, I said I was getting married. Can you believe it?

There is nothing to believe. He can fall in love again after breaking up.

If they fall in love again, two people who can get along are likely to get married soon. If her other half has taken a fancy to it, he will probably choose to get married.

It may be fake, but it may make you give up and stop pursuing her.

But in any case, there is no need to think about him. Go your own way and find your favorite partner.