In the Ai e no Suteppu/Step (愛へのステップ)series:

1. Yuuwaku no Program (誘惑のプログラム)
One wedding leads to another...

Essie Russell met millionaire businessman Xavier Grey at a wedding: she was the chief bridesmaid; he was a distant relative of the bridegroom. They were strangers, yet for some reason Xavier clearly disapproved of Essie. She was determined not to care. She'd simply flirt with him and then leave the wedding!

Only Xavier was intent on pursuing her. Rich and handsome, he was used to getting what he wanted -- and he wanted Essie! But when Xavier proposed, was it an affair or marriage he had in mind... and could Essie trust him?

2. Ai Naki Proprosal (愛なきプロポーズ)
The terms of engagement...

Candy Grey was wary when Quinn Ellington suggested it would be mutually beneficial for them to marry. She knew her uncle had asked Quinn to look after her while she recovered from an accident. But wasn't marriage taking it a bit far?

Quinn claimed he needed a wife, but he didn't strike Candy as a man who needed anyone! Many women had tried to get him to the altar...so what really lay behind his proposal?

[From fictiondb]