"For you, my darling, it could only be a 'yes,'" Bosworth wrote in a Jan. 21 Instagram post, alongside a photo of her and the investor sharing a passionate embrace. "Thank you for being the best that one could be, for me. All my love, L."
Also making an appearance in the heartwarming snap? Her diamond engagement ring, which features a square-shaped gem and thin band.
Following her relationship update, Bosworth received an outpouring of support from fans and friends, with fellow Laguna Beach alum Morgan Smith commenting, "So happy for you!! Congrats."
Meanwhile, influencer Kellyn McMullan added, "I am CRYYYING this makes me so happy... perfect pair!!"
And Bosworth shared her gratitude for the overwhelmingly positive response to the news, commenting under her initial post, "Wow, people love LOVE. Thanks all for the kindest words of all time."