How does Lauren from make it or break it break up conner and kaylie?

Lauren has sex with carter and carter keeps it from Kaylie feeling very guilty finds the right time to tell Karlie then Kaylie runs away and finds out that when carter told her he didn't say whom he had sex with Kaylie finds out the Lauren had sex with carter (Kylie's boyfriend ) and now Kaylie doesn't want anything to do with him.

she tries to steal kaylies stuff.and she is always giving hints.like when she said remember when we kissed.and she took kaylies cellphone with her and carter kissing and put it somewhere were her dad could see