One woman closer to your wife… had a similar situation except it broke off the week we were to be engaged. 

feels horrible but it’s ok. 

Hashem gave us feelings and it’s appropriate to feel your feelings in this situation   

I’d be more nervous if you felt nothing

 talk it out with a mentor and give yourself time to heal. 

you will look back on this one day and think to yourself “oh yeah I forgot that it felt like such a big deal at the time.” 

hatzlacha 

It must feel terrible to go through an engagement breakup, but consider this. Up to 10% of todays frum marriages will likely end up in divorce sadly. Another 15% at least, will realize they aren't compatible but will remained married due to social stigma, children, or financials. All these people wish they hadn't entered the relationship with their spouse. Hashem just saved you from a trainwreck of a marriage that would have ruined your life! You now have more time to get the help you need to be ready for marriage in the future. I know people that got married before being emotionally ready & they suffered tremendously because of it. You probably should choose a different yeshiva to keep away from the male relationships you had in the past. Wishing you much hatzlocha this year!