Showing A Man to Call My Own by Johanna Lindsey

When twins Amanda and Marian Laton lose their father unexpectedly, they are stunned to discover that in his will he has put them in the charge of their Aunt, who lives on a sprawling Texas farm. Horrified to be leaving the town where they have spent their lives so far, the twins arrive at their Aunt Red's ranchhouse, only too aware that she now has to approve any suitor of theirs who may appear - or they lose their inheritance. Amanda, with her glorious golden ringlets, had always been her father's favourite, and her scheming ways ensure that Marian never has the attention of any of the boys who call at their house. But they soon both meet Chad Kincaid, handsome cowboy son of the next-door ranch owner - and both girls want him. After an intoxicating series of twists and turns the course of true love ends in one of the Laton twins winning the heart of Chad...the heart of a man she can call her own.