I once dated 5 women all at the same time
Why would you date 5 different women like that?
It was fun, they all were so jealous of each other.
It's wrong to date many women who think you're exclusive and play with their emotions like that. It makes them not trust people anymore. You should be honest if you don't want to be exclusive.
The moment they find out, they will leave me anyways, it's not big deal.
It is a big deal because emotions are involved. They would be upset that you did this.