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Britney Spears (L) and Sam Asghari arrive at the premiere of Sony Pictures' "One Upon A Time...In Hollywood" at the Chinese Theatre on July 22, 2019 in Hollywood, California.

Britney Spears gave fans a glimpse of her engagement ring over the weekend (February 27), while celebrating her fiancé’s 28th birthday. Spears, 40, shared on Instagram a wholesome clip of Asghari kissing her sparkling hand.

“May the birthday celebrations begin for my wonderful fiancé … I love him so much ❤️ !!!” Spears captioned the post, filmed on a private plane. “My hero … my mentor … my rock … my bliss … my love ❤️ !!! I hope you get everything and more for your birthday 🎂 !!!”

In the sweet video, Asghari choked on his coffee after kissing Britney’s hand, which made the “Toxic” singer laugh. Commenting on the clip, the actor and personal trainer pointed out that Spears’ ring was “on the right hand because we don’t follow rules! ❤️” On drinking his coffee too quickly, he added, “Also not use to this bougie a– coffee ☕️ I like the economy seats much better 😂”

Asghari celebrates his birthday this Friday (March 4), posting an Instagram video of an intimate kiss with his fiancée in the water after they reached their tropical destination. “Island love 🏝 with the lioness @britneyspears,” he captioned the video.

Spears and Asghari have been romantically linked since 2016, and got engaged in September 2021. A source told PEOPLE at the time that the pop icon was “ecstatic” about the proposal, which came two months before the end of her 13-year conservatorship.

One month earlier, she’d praised Asghari in an Instagram post, writing that he’s “been with me through both the hardest and best years” of her life. A source told PEOPLE in June that “Sam has been Britney’s rock for years. He makes sure that she eats well and works out. She leans on him for everything. He works and has his own life too, but is around as much as he can.”

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