The 33-year-old television personality dedicated a sweet post to the 26-year-old NBA star Monday amid rumors she's pregnant with their first child.
Kardashian shared a photo on Instagram of herself and the Cleveland Cavaliers player kissing. The picture was taken at her surprise birthday party in June.
"The day I met you, my life changed. Thank you my love!" she captioned the snapshot.
"Khloe wants to give birth in L.A. That's the plan right now," a source said this week.
"Khloe seems very happy," the insider added. "She doesn't really talk about the baby. She hasn't had a baby shower yet, but has one scheduled."
Kardashian and Thompson, who already shares 1-year-old son Prince with ex-girlfriend Jordan Craig, were first linked in October 2016. Kardashian said in the Aug. 13 issue of You that her relationship with Thompson is the "best" she's ever been in.