Relationships when you're young are usually very emotional and tend to be full of drama. Relationships when you are just married are challenging. I would say to keep building security and strength in your marriage before you take the plunge into full-on polyamorous situations. Read about it, talk with your hubs about it, but I don't think you need to act upon anything before you're ready or if there's any instability in any area of your marriage. Make sure you have a stable foundation to which you can return if an additional relationship goes kablooey.
Independent solo polyamorist seeking lover-friends willing to invest in friendship, companionship, and love, but without a need for partnership.
Never confuse commitment with exclusivity, love with ownership, nor sex with intimacy!
For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.
~ Carl Sagan