Pro or con an open relationship?

Yes, to have a open relationship is a healthy. But not all your past relationship or events that you should tell him, If your bf asked anything about your past just answer it but not elaborate it, so that the guy cannot judge you as what you are in your past. If your bf haven't ask about your ex bf or with your past activities, well don't open that topic it may lead to misunderstanding. You must be both open to each other as what you have right now in present in what you do and your activities. In an open relationship can build the Trust that you two wanted to have with each other.

Definitely,we have faced many temptation every day.On the one hand, I think couples should be honest to each other.Only in this way,could show your love and your close relationship.But on the other hand, sometimes,we must lie to our beloved in case any misunderstanding occur. This really bothered me once upon. Think it over, you will find out that it is nothing to make some small lies,if that really can make you love each other more. That is my opinion,Enjoy yours.