The Italian's Marriage Bargain: Italian Husbands - Carol Marinelli Challenge book.

So the burning question - did he cheat? I... don't know. It certainly looked like he was caught with his hand in the cookie jar. OTOH, the OW was a scheming heifer so I'd believe she took advantage of the h's insecurities.

V frustrating couple - two strangers who marry because... he insists? And he's aggravated because she's holding back, yet he's not exactly inspiring confidence. So they spend the entire book angsting and fighting.