Who is to blame for the betrayal?

So, who is still to blame for the love triangle: wife, husband or mistress? There are different opinions. ▪️ The lover is not to blame. Often she is just a fool in love, who, by the way, owes nothing to anyone. ▪️ The wife is not to blame. She is often a tortured, unhappy woman who "owes" too much to anyone. ▪️ Only one person is to blame for male infidelity - a man. He ruined the life of one, set about another, driven solely by his immense selfishness. What do you think?