Kourtney Kardashian is apparently ready to have another baby with boyfriend Scott Disick. "We're not trying, but we're not not trying," the Keeping Up With the Kardashians and Kourtney and Khloe Take Miami star told E! News during a Thursday interview. "What? What does that mean?" asked Kourtney's sister Khloe Kardashian, who also participated in the E! News interview. "So you're not ready to get married, but you're ready to have another baby?" "Kim and I are 18 months apart," replied Kourtney, confirming that was the case and referencing her age difference with sister Kim Kardashian. "We had the best childhood. It was so fun. Scott was an only child and I always say to him, 'Who did you play with and stuff?' It's just weird. I think Mason should have a sibling." Kourtney and Disick welcomed their first child -- son Mason Dash Disick -- in December. Last week, it was reported that Khloe and her husband Lamar Odom were expecting their first child together -- however he declined to confirm a pregnancy and she attributed it to just being "fat." Since Khloe was so opposed to Kourtney having another child with Disick, she offered her sister an alternative. "What about a cousin?" said Khloe, according to E! News. "If so, maybe me and Lamar will start sooner."