What do sociologist mean when they say that love romance and jealousy are socially constructed?

With true love there is no true problems with wanting something you don't have. Without love there will not be romance. With Jealousy there is no Love because you are wanting something someone else has. They are all social problems because sometimes social statuses in schools and such are based around popularity and that goes into Love, Jealousy, and Romance.

I hope that answers you Q