The book im searching for a while now is a bout a young women who falls for a guy she meets on the beach one day. They got engaged and live
The guy is from a rich family and their specilize in making jewelry,, the girl's only family is her mather
I think I may have found it--Broken, by A.E. Murphy. The remarks in the user reviews mentioned some of the key points you described, and you can read some of it on the Amazon website--it starts with the heroine, Gwen, walking on the beach and meeting a man. This appears to be available only in Kindle format--is that what you remember? Anyway, check it out here and see:
I hope this is it! Let us know if not.