Stop asking him. Listen to your gut..trust that..not the word of a liar. Stop asking..start looking.
Search his car..search the truck,where the spare tire is,look under the jack,under his seats,in the lining of the seats,search everywhere.
Search the garage..everywhere.
Search the bathroom...his clothes,his pockets in the clothes in the closet,search his shoes.
Asking him will get you nothing but pissed off. If he has another phone...and it sure sounds like he does...he will just continue to gaslight you...he got the phone to deceive you,admitting he has it will mean you will find out the affair is continuing..game over..no more cake for him..so he will continue to lie.
Does OW have a BH? Maybe you can talk to him,tell him your suspicions,and he can check his wife's cell or their online bill for that number?
M: June 2001
..that feeling you get in your stomach, when you heart's broken. It's like all the butterflies just died.