1) Create a .bashrc file in the user directory (default windows C:\Users\UserName\)
NOTES: if you think you can just right click in the directory in Windows Explorer and create a file called .bashrc you (and me) are sadly mistaken, you'll get an error from Explorer preventing you from creating a file without a name. So, I did this from my git bash by executing echo 'blah' >> .bashrc just so I could get the file to edit in notepad to put the required code in it.
2) Edit .bashrc in a text editor and put the code found here: https://help.github.com/articles/working-with-ssh-key-passphrases#platform-windows under "Auto-launching ssh-agent on msysgit"
3) restart bash.
TROUBLE SHOOTING: ps will show all running processes. I found that when I was testing this out, it wasn't prompting me to put in my password when bash was started. When I executed ps I noticed many ssh-agents running. After killing them all, I was able to restart git bash and everything worked. Identifying this problem took me the longest.