(Yahoo!) - It looks like Mila Kunis and Ashton Kutcher are ready to take their relationship to the next level.

The couple of nearly two years is engaged, a source confirms to Yahoo.

Kunis, 30, was spotted shopping with her mother at The Grove in L.A. on Thursday sporting a noticeable sparkler on her ring finger. 

A wedding will make for a storybook ending for the lovebirds, who first met in 1998 when they played dating teens Jackie and Kelso on TV’s "That '70s Show." He was 20 and she was just 15, so young that when a scene called for her to share a smooch with Kutcher, it was actually her first kiss ever!

Kunis and 36-year-old Kutcher — whose divorce from Demi Moore was finalized in November 2013 — kept their romance on the down low at first, but eventually couldn't contain themselves any longer. Nowadays, the couple is lovey-dovey in public and seem to have a pretty cozy relationship. They've even started their own cute traditions.

"We have a thing called white T-shirt night and it's when you wear jeans and a white T-shirt and you go on a date," Kunis told Cosmopolitan this month. "Nothing fancy, it's just something that you love to do. And whether that's bowling or dinner or going to a cheese shop and have some wine or walking around. I think that's just the best thing to do — and sometimes it's just nice to stay home.

Kunis seemed to have confirmed the happy news herself earlier this week when she posted a sweet shot of the pair on Instagram along with the caption: "I love you @kutcher78."