Khloé Kardashian isn't holding her excitement back for her sister Kim Kardashian and boyfriend Pete Davidson.

The Good American founder, 37, celebrated her sister's happiness on Twitter after Thursday's episode of The Kardashians. When one Twitter user shared that Kim seemed "in love" with the Saturday Night Live alum, Khloé responded with enthusiasm. 

"Isn't it???" she replied to the comment that Kim and Davidson were "so cute." "She is in LOOOOOVVVEEEE." 

RELATED: Kim Kardashian Recalls How Pete Davidson Said It'd Be '4 Months' Before She Was 'Obsessed' with Him

Kim, 41, hasn't publicly stated that she loves Davidson, 28 — at least not yet. During Thursday's episode of The Kardashians, a producer asked her during a confessional interview if she calls her connection with Davidson "love." With a smile, Kardashian responded: "I don't know if that's any of your business."

The SKIMS founder also shared a sentiment about the start of her relationship with Davidson. "Pete and I have been dating for a few months," she explained in the confessional. "We're doing really, really good. Pete said 'I'm gonna grow on you. Just wait.' He knew. He said 'I give it four months in and you're gonna be obsessed.' I was like, okay, we'll see…"

Isn’t it??? She is in LOOOOOVVVEEEE