What book is this that I am looking for?

I'm looking for a book (or I actually think it may have been a trilogy of books). They were Christian romance novels, but pretty thick ones...in the 300-500 page range maybe, as opposed to skinny little books. They were about this really rich guy that wanted to get married but didn't want the bride to know who he was til AFTER the wedding, because he didn't want to marry someone who was after his money. He ended up marrying some bank teller, and he would pick her up on a motorcycle, wearing a helmet so she couldn't see who he was. If you have any idea what these books are, or who wrote them, I would love to find them again.