Why did Kim Porter say that Diddy and Jennifer Lopez's relationship wasn't real & it wasn't in his heart?

Why is she denying the fact that they loved each other. Don't you think that she is/was jealous because Diddy was with Lopez and not Porter at the time? Diddy & Lopez had a relationship, why can't she just admit it? Read the article here http://www.tmz.com/2007/08/07/kim-dishes-on-ex-diddy/