Why does Spencer Pratt hate Lauren Conrad?

Also, what happened between Lauren and Heidi?

Ya really I don't know why spencer and Lauren are fighting but Lauren doesn't like Heidi because she is dating spencer... And heidi wants to be friends with Lauren but Lauren doesn't have any interest with her at all!!

well spencer hates lauren because she said that he and heidi started a rumor about her and stuff...but he just dislikes her being friends with heidi...

Spencer&Heidi made up a rumour that Lauren had a sex tape.Heidi&Lauren are not friends anymore.Spencer always hated Lauren because she was best friends with Heidi and Spencer got jealous.Spencer a d*ck so that's why Lauren never liked him.And Heidi's a fake idiot who chooses her guy over her best friends.