It is sad, but things are much easier broken than mended.
You can forgive, but usually, you still wear the scars of the encounter and this leaves you generally unwilling to re-engage.
They say it is better to ask forgiveness than permission – which, honestly, I get. I have a very low tolerance for red tape and hoop-jumping.
But in terms of relationships, I think it is better to be careful, to prize your relationship, than to risk grave injury and a rift.
Once the glass is broken, even when glued, it is hard to get it to hold water again.