Once given, a gift is yours to use, store or dispose of as you see fit.
Sometimes the pain outweighs the good things.
I'm not a big fan of the white lie.
It's okay to forgive yourself immediately and for good.
Being highly invested and preoccupied by an emotionally consuming mission tends to steal resources from other aspects of your emotional life.
Instead of talking at each other about the non-business-related contact, talk to each other about your concerns about marriage. Listen a lot, too.