Welcome from someone who lived in Michigan for about 20 years.
The first advice I'd give you is to try and increase/improve your communication channels with one another; communication is a huge factor in an open relationship.
Some highly recommended threads on this site can be found at:
There are book and website recommendations at:
And we have a Dating & Friendships subforum
that might help you locate/meet people in your area.
In general, have a good look around on our site, see what threads call to you, post any specific thoughts, questions, or concerns you may have.
The above links might give you a good start.