It depends on the laws in your state. You need to consult with an attorney in your jurisdiction who is familiar with the rules and practices in your particular court system.
You file for a legal separation which will divide money and property and if you have children, visitation rights. Then you decide if you are going to divorce and proceed with that.
That's up to the courts to decide.
That is possible. It will be up to the court to decide.
You are the only person who can decide if you are better off with him or without him.
Who got the loan is not really important. The judge will decide based on the length of the relationship and the financial aspects. In many cases each of the parties will be entitled to half of the equity.
If your circumstances are bad enough you can obtain a court order for him to vacate the premises. It is up to a judge to decide. You need to contact a private attorney or social services agency that can review your situation and determine what your options are. If you and your spouse are simply not getting along then you should speak to an attorney about filing for divorce.
Hopefully you had proof that this woman's husband was cheating. If there is no truth to the accusations; the divorce happened then yes, her ex husband could have sued you because it's 'defimation of character' and you ruined not only his marriage but his reputation' and the courts would decide. However, if the husband did cheat and you witnessed it then you could be called in as a witness, but this generally does not happen.
If your husband is dating someone, you clearly have a problem to solve. Decide if you will stay married to someone who would do this to you. Insist it stops if you want to stay with him or file for divorce and find someone who deserves you.
No. Not unless the court orders it. Many women decide to continue using their married name and for various reasons. That choice is up to you.
He's worried about abandonment but not infidelity?? If you're wanting to divorce him, get a lawyer. A judge will grant you a divorce because of his infidelity and will help decide who gets the house.
A divorce is when two parents fight and finally decide to move apart.
You don't have to bother speculating. Federal courts do not, and never will, decide divorce actions.