Yes, act quickly , but don't stress yourself out... In these situations there's a risk of you panicking and acting on impulse... avoid that at all costs. You need to keep your wits about you and SOMETIMES that means stopping to breathe.
I agree that acting fast is important, but dont' act fast in a panic.
Stay calm and control your impulses and you will do very well here, you have a lot of positives going for you here... I think the chances of this turning out well for you are quite good.. it does take time.
Re the length affairs can last... their lifespan is heavily dependent on two things
1. How effectively the BS fights back 2. The ability of the OW and WH to mature before the romance fades away.
The affair can last years if the BS doesn't fight back effectively... The affair can also last a long time if the two unfaithful partners find the maturity needed to face the realities of life as a couple (given their start, this almost never happens).
The long term success rate of affair couples according to Phil McGraw is less than 1%. This does NOT mean affairs end in six motnhs... But in this case I don't see it lasting long...
