Yes it is all very typical... I would just not interact with him at all and keep exposing to your exposure group... Keep educating everyone you can about infidelity and leave him feel he pressure...
They don't just "come out of it"... You have work to do to pressure him into ending the affair... If you don't do the work, the chances of the affair ending before he files are much less
Affairs are addictions... addicts don't just "come out of it"... they cave under pressure to end it, or if left on their own they will either hit rock bottom and end the addiction or they will hit rock bottom when the affair turns into something more long term and fails naturally...
The success rates long term for affair couples is less than 1%...
Its nto a matter of if it will fail, but only of when...
