I am so sorry. Usually when someone accuses you of something, they are doing it (like adultery). Meet with an attorney; first visit usually free. I got a divorce after 31 years of abuse; I know how difficult it is. Protect yourself, first and foremost.

25 years together... I can't believe, really! I beg you not to give up! If I were you, I'd try to get him back. To start with, read the info from here - http://exback.how/husband . I wish you patience anyway. Be happy!