I can't remember the name of the series.

I read a series of I think 8 books. They are all siblings and the last name is Valentine and is about each siblings love story.
They are very old. I actually bought them at the dollar tree back in like 2003....
can anyone help try to remember the titles?

Valentine series, Curtiss Ann Matlock? I don't think all the lead characters are siblings but there is a family named Valentine, in the town of Valentine, Oklahoma.