If he's still with OW, then he's not coming home at the end of the month and even if he did, he won't be transparent. They won't just "turn it off" like that. Only you can decide what you are comfortable with and what you are willing to accept.
Me: 48 y/o W: 47 y/o Together: > 20 yrs BD: Dec '15, then S 2nd BD: Mar '16, then I filed for D April '16: started piecing
