I think that maybe you need to prepare yourself that this may not happen until they DO actually live together. At the moment they just get to see the 'best' bits of one another. Being together all the time, at work and at home, may well show some big cracks.
There is a long way to go here though. You just don't know for sure what will happen when OW tells her family when it is time to move in with your H.
((((((((((((HUGS))))))))))))))
Everyone has days when it all seem so much worse. Just look after yourself and don't doubt your self worth.
Saffie me 46 H 46 M in 1986 D20,D18,S16,D13 H's A 01/05 to 07/06 H recommitted to M 07/06 renewed vows 09/06 Going from strength to strength