Why should the two cheaters get away with it with one spouse while the other is suffering?

The other spouse may not know; may know, but is saying nothing or, they just don't care and may be cheating on their spouse. No one is getting away with anything as cheating is selfish and cruel and not necessary. Instead of cheating on someone it is easy enough to break up whether going steady; engaged or married, but people who cheat never consider anyone but themselves. The winner will be the loyal person even though they are going through heartache because in the future they will their true love. Individuals can go down many paths of life (some painful) in order to find the right person to settle down with.