The 20-year-old reality TV star's family is not happy with her relationship with the British singer because of his reputation as a player, reported Aceshowbiz.
"Her family has warned her because of Harry's reputation as being a player. Harry really gave Kendall the run-around in past and it broke her heart.
"At the time when they first met several years ago, Kendall was not famous like she is now. She went into the relationship as more of a star-struck teen than the accomplished and in-demand model that she is today," a source said.