Is this rational? One of my colleagues met a strange man and then traveled and slept together, only to know that the man had a wife, so

First of all, I personally think that your female colleague's decisive decision is worthy of recognition as far as this move is concerned. This not only protects yourself from further harm, but also avoids some "sequelae". I think, as a girl, although I can't control a man to be responsible for his actions, I can at least stop myself from doing something sorry to another woman, especially after I know it. Secondly, I might say something about your female colleague. If you meet a right man next time, what you should actually do is to find out his marital status first. She went out to travel with a person without knowing the man's background and marital status. This move makes me feel a little irrational. If this man not only cheats on color but also cheats on money, it may not be possible for you to stop if you want, which is really dangerous. Again, this person is really scum. I didn't say I had a home or a house, nor did I say I had an affair at that time. I didn't say I had a wife until the girl went on a trip with him. Isn't this a lie? Fortunately, it was a conscience to finally give her money to buy a plane ticket.