FOUND Contemporary romance about woman mistaken for her lookalike half-sister

[ramos4]

Hi all,

I'm looking for an ebook I read many years back (~2009-2011) about a tycoon/billionaire/successful type-A man whose fiance/wife has gone missing (I think she left him or ran away for reasons I can't remember). He's looking for her but finds her lookalike half-sister (not twin) instead and I don't think he believes her at first when she's trying to tell him that she's not his fiance/wife.

He takes her for revenge and sees there's chemistry and passion between them. The wrong woman (the half-sister) is innocent and a contrast to her sister, who only got together with the male protagonist for money. We find out the other woman would stay with the half-sister whilst she was getting abortions, but there was no children between the couple. The male protagonist eventually believes the woman is the half-sister and reveals he first saw the half-sister first and fell in love/lust but got together with the other woman because he thought they were the same person. The male protagonist and half-sister get together in the end.

I remember a part of the book where the protagonists go to a party together where people mistake the woman for her half-sister, and maybe it's here the two sisters have a confrontation.

Any help would be much appreciated! Thanks!