The Burdens of a Bachelor — Rebecca Connolly

What the eye cannot see...

Colin Gerrard has everything. He is a handsome, charming, and unattached gentleman in possession of a fortune. But what nobody knows, and would never suspect, is that he is not nearly as carefree as he seems, nor is his heart free for anyone's taking. It was already taken long ago, and when his lost love unexpectedly reappears, in London of all places, he's very much afraid that she still has it.

...the heart already knows.

Lady Susannah Hawkins-Dean had no intention of ever seeing Colin again after their terrible departure sixteen years ago. She never wanted to see anyone that knew her in the past. There were too many secrets, too much shame, and he, of all people, could not know them. But when Colin refuses to leave her in the past, Susannah finds that she is just as in love with him as she ever was, and it could ruin them both.