Let’s make this clear right off the start: this is not a guide on how to cheat. If cheating is what you’re looking to do stop reading; you’re not welcome here.
Additionally, you’re not going to find an essay debating and describing various relationship models. I am not trying to convince anyone to adopt one model over another, the choice is up to you and the people you are involved with.
The final caveat is this: Not everyone is willing/able to embrace and enjoy alternative lifestyles. You’re dealing with a lifetime of propaganda, beliefs, dreams, drama and scar tissue. Before you consider dabbling in this world you need to have a very serious and honest conversation with yourself. You’re dealing with emotions, your own and those of the girls. Just like the standard relationship model, things aren’t always going to work out, and people are going to get hurt.