Advice plz! Snapchat cheating husband..

Husband is an alcoholic and when he was having rough times he added an old fling before I on Snapchat and had old sexy videos of her saved on there. It was devastating. To me this is cheating and something we discussed as cheating in the beginning of our relationship.

He deleted his Snapchat and began going to AA and as far as I know been sober ever since.

Today I happened to log into my Snapchat account (I rarely go on there) and I pressed “contacts” and noticed there is an account linked up to my husband’s contact. It’s under the name of “David Nolan,” a completely different name than my husband, with like fire and kissy emojis as the background on his emoji character thing.

I confronted him and asked what it was. He said it was a scammer or hacker and not him pretending to be a fake person.

Now, obviously my trust is shaky with him right now after that last incident. My question is: how in the hell can someone hack into an imaginary Snapchat account linked to his phone number? Maybe if he had a Snapchat account, then yeah it could totally happen. But he had deleted his Snapchat months ago. How could it be a scammer if he doesn’t even have an account and it’s linked to his number?!? I am absolutely confused and feel like an idiot like he is playing me.

He said I owe him an apology. I feel like I owe him fucking divorce papers!!!