What Happened?

I got married last fall.  I had just returned to me and my girlfriends house after a some what chaotic and traumatic business adventure 1300 miles away.  The original plan was to have my girlfriend move to where I was living.  She turned in her resignation and began making arrangements for departure.  In the mean time the business that I was involved in collapsed.  I came back to our home.  She could not get her old job back so we decided to start our own business.  I was exhausted and desperate when she began pushing for marriage.  She said it made sense for tax purposes and I was to drained from my travels to put up a firm fight so I agreed.

Eight months later I find myself regretting my decision every month (at least).  I love her and am growing to lover her more as we continue our relationship but my desire to be single stays the same.  We have both talked about why we got married in the first place, and aired out our hidden motives.  We both had faulty ideas regarding marriage.  We grew in true intimacy after that discussion but I remain longing for something different.  I think I may be poly amorous.