There's nothing you can do to stop her from filing for divorce. However, some states have a mandatory waiting period for those who have children. I don't know if Indiana is one of those states. That said, I don't think you should worry about the divorce process right now. That's in her hands, if she chooses to file, write up and agreement, and get the process started.

Keep doing what you're doing. Sounds like you've met some great new people to hang out with. I'd be careful of getting too close with the females... but definitely do some male bonding! smile