See how could you believe him- pointless! He did not offer a full explanation only a piecemeal one. This is why you need independent verification. You are never going to know. A PI will see if they are spending inappropriate time together. I'll be honest- even if it's a friendship where he spend lots of time wit her, it's time taken away from you and him as a couple. His energy right now should be focused on the relationship you have. Just my thoughts.
M38, H37 S3, S7 Together 15 yrs Married 8 yrs Bomb July 2008 Inhouse separation "I hate you" "We are over" (too many times to count) Reconciled Sept 2009 (still worth it)