OP you seem very passive about this, and the advise from MN users.
He says he loves two women.
Actually, if we use the bullshit translator on this it would mean he loves what comes with you, the washing of his clothes, the cooking, and lets not forget HIS reputation.
You say you are dealing with the consequences, its a choice OP, a choice .
He is not holding your marriage over you, you are.
He loves the other woman as she is younger and gives him the ego boost HE needs, He does not care for either of you.
And here is why. This affair has not cost him anything, he has not given it a single thought that he is risking this womans job, your sexual welfare, and clearly loves the fact that he has his job, says he is looking? He is not, what he is doing is telling you things he knows you want to hear in order to keep you where he knows you feel comfortable, for HIS gain only, HIS gain.
He is selfish and you will end up really messed up from this, financially and emotionally.
Is being married to someone you ones knew that vital for your survival and existence? Becasue the man you now know is lying to you every single hour of every single day and he is comfortable with it. Very comfortable.