Reality TV star Khloe Kardashian is reportedly desperate to have a baby and she doesn't necessarily believe in marriage before having kids.

Khloe, who documented her fertility struggles before splitting with her husband and basketball player Lamar Odom in December 2013, is besotted with her rumoured boyfriend and rapper French Montana, and she is talking about starting a family with him, reports contactmusic.com.

Khloe doesn't necessarily believe in marriage before kids, since her sister Kourtney has two children four-year-old Mason and two-year-old Penelope with long-term boyfriend Scott Disick, while Kim has nine-month-old North with fiance and singer Kanye West.

"Khloe just wants a baby so bad and she doesn't necessarily believe in being married to have a baby. Look at Kourtney and Kim. Khloe's baby dream is even bigger than finding the man of her dreams. Her family wants her to slow down and heal from the Lamar mess, but she wants to be a mother so bad," said a source.

Khloe's romance with Montana is rumoured to have spiced up.

"They've definitely been having s**, and Khloe isn't on birth control. Khloe sees a future with French. They have amazing chemistry," said another source.