As fans wait for the debut of Kourtney & Khloe Take The Hamptons as an insider reveals how serious their relationship really is.

E! Livid About Having To Pay French Montana For Having To Pay Him For 'Kourtney & Khloe Take The Hamptons' Appearances

They told Radar Online Friday that while Kardashian first started dating the Pop That rapper in hopes of making her estranged husband Lamar Odom jealous, she has fallen for the superstar.

"She's genuinely in love. He is such a romantic guy and he sends her flowers, gifts, and texts her little cute lovely things all day."

Kourtney Kardashian & French Montana Kiss on 'Kourtney & Khloe Take The Hamptons' Trailer

She recently shared his latest gift to her, which included dozens of red roses via Instagram.

Kardashian also seems to appreciate the little things French Montana does that Odom had yet to master in their marriage.

The source added, "It is a nice change from Lamar because he gives her space and allows her to hang out with her friends and have her own life."

Still, there has been rumors that French Montana might be giving Kardashian too much space and is cheating on her. But the insider reassured that Kardashian is not phased by the speculations.

"Khloe doesn't pay any attention to the rumors that French is cheating. She learned to blow that sort of stuff of when she was with Lamar. She always tells French to 'walk' if he does not want to be with her."

Check out the season premiere of Kourtney and Khloe Take The Hamptons September 14 on E! Be sure to keep up with Enstars for cast news and updates.