A source tells PEOPLE that the cosmetics mogul was “shocked when she got pregnant, but Travis was very supportive from the beginning and was there every step of the way.”
It’s a very different relationship than her off-on, up-and-down romance with ex-boyfriend Tyga, from roughly fall 2014 to spring 2017. (The “Rack City” rapper shares a child with Blac Chyna, Jenner’s brother Rob Kardashian‘s ex-fiancée with whom he shares 1-year-old daughter Dream Kardashian.)
RELATED VIDEO: Kylie Jenner Snapchats Her Family’s Stunning Floral Gifts Celebrating Her Baby’s Arrival
“Kylie had a lot of trust issues with Tyga,” the source explains. “He was her first love and she was obsessed with him, but she never felt like she could trust him 100 percent. With Travis, things got really serious fast even though she was still getting over Tyga.”
The Keeping Up with the Kardashians star began seeing Scott, 25, in April 2017, and the source says she’s grown by his side.
“He is very protective of Kylie, and his family embraced her, too,” the source says. “Kylie has matured a lot since becoming pregnant and is much less dramatic than when she was with Tyga.”