Magic, First, I like to clear up something in your subject line...this is thread number 26, not 25.
Now. on to the important matters of the day.
1. Seek legal counsel. Listen to what the lawyer has to offer you in the way of advice. Nothing or no one is telling you to hire this person to go forward w/any action. Take what information that you receive and store it in a safe place. At least if you are still going to meet w/a mediator, you will know what you are entitled to. Whether you go for what you are entitled to, that is your business.
2. Separate the business from the relationship.
3. Please understand that this is a forum about relationships and not about business ventures. We do try to guide people in the right direction, but ultimately, we are mainly here to discuss relationship issues...not business ventures that appear to be souring by the minute.
4. Bottom line, you and only you can decide what is best for you when it comes to the business financial aspects. Apples and oranges do not mix well at all and that's what has been going on in the last 25 postings.
5. Let's get back to discussing your issues with the personal relationship and leave the business one to the legal authorities.
6. There is a thread on the forum that gives some good pointers on communication. If you would like for me to locate it and post the link. I'll be happy to do so...but I do think it's best that we do not discuss any further about the business. That is an entirely separate entity that requires professional scrutiny. We all have given you advice and suggestions about what to do, but you need to really be speaking to "real" people in the "real" world about this. That is what lawyers, accountants and mediators are for...to guide you on such matters.
Now, about your relationship w/the SO, I would be nice, i.e., civil, but I would not entertain any more talks about reconciliation, the relationship or his female friend under you have settled up the issues of the business. Once the dust is settled, you can then decide whether he is continuing to keep on a string if he's sincere about doing the work. It's one step at a time and for now...get your financial and business issues settled. They are the most important things that you need to be focusing on right now. As for your SO, he's not going anywhere. Why do I say that? Because he's right where you left him 25 threads ago...in the same rut, spinning his wheels and yours.
You, and only you, have the power to change your life. No one else can do it for you.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.