No need for apologies. That's one of the toughest things that can happen to you. Something similar happened to me, a rotten breakup, and I carried that around for decades. I wish I had gotten professional help as soon as that happened. That's why I would say, if you need help, just go out and get it. There's no shame in getting some therapy. We don't put anyone down for getting help for a broken arm or for a terrible cough, but some people see a stigma in getting mental health treatment. But that's just as valid as seeing the doctor for a pain in your side. Having someone you love bail on you is just plain hard. There's no way around it.