Very sorry he's hurt you like this. Never a "good" time to find out something like this.
I remember when my mom died, and I began to grieve... my boyfriend of six years shared his opinion with me that I was being selfish in my grief. Talk about feeling gutted... at that point, it gave me just enough strength to end that abusive alcohol-sodden relationship.
Sometimes, it's not a bad thing for these events to cluster-bomb us, because it can give us ironic strength.