'Looks like I've come home just in time.' The duke's son returns!

Avaline hasn't seen her husband, Lord Fortis Tresham, for seven years, after he was presumed dead at war. Now her convenient husband has returned in time to save her from an unwanted suitor! Yet as he returns to her life - and her bed - Avaline is cautious...why is he so mature, courteous and thoughtful - so different from the selfish soldier she married?