Kim Kardashian Gives Kourtney Baby, Marriage Advice [VIDEO]: Scott Disick 'Will Cheat on You, And It'll be Your Fault, You'll End Up Alone'

In recent episodes of E!'s hit reality show "Kourtney and Kim Take Miami," Kourtney Kardashian's romantic relationship with her babies' daddy Scott Disick has been... eh, alright. In a sneak-peak of Sunday evening's new episode (March 3), lil sis Kim gives Kourt some baby and marriage advice... since she's such a pro on the subject, and all. According to Kim K, Kourtney has to give Disick some more lovin' and attention, or else he's definitely going to cheat, and it'll be all Kourt's fault. The pregnant 32-year-old starlet offers her sis a harsh reality - if she doesn't focus more on her relationship with Disick, she's going to end up totally alone. Sorry for being so brutally honest!

Kim K's adorable baby bump with rapper Kanye West's child is growing bigger by the day, so maybe she does have some good advice when it comes to domestic living... check it out:

Kim K: "He's going to cheat on you, and it'll be your fault. You just don't put in like any effort. You're going to lose him, like, no joke. You're literally going to end up, like, alone."

It might sound harsh when Kim basically tells Kourtney "spend less time with your kids, more time with your man," but her point sort of makes sense... Guess fans will have to tune in with E! on Sunday at 9 p.m. ET to see what happens!

Kardashian and Disick have been together for years, but they never got married. Their relationship has had its major ups and downs (as broadcasted all over reality television), but they are currently in a "healthy" relationship and raise their two children (Mason and Penelope) together.

What do Mstarz readers think - does Kourtney need to put in some more effort with her relationship with Disick?