Ding! Dong! Hear the wedding bells toll for White Lotus actress Alexandra Daddario and her boyfriend (now fiancé) Andrew Form. E! broke the news on Dec. 2, after confirmation from her team. Though Daddario, 35, just announced the engagement, it appears she's been off the market for a bit longer.A close up of her pictures at the just concluded Elle's Women Hollywood event on Oct. 19 shows the Baywatch star wearing the beautiful engagement ring. You can read the sweet love letter below."I Love You… Even That Is An Understatement."The couple first went Instagram official six months ago when Daddario shared a black and white picture of her kissing the 52-year-old producer. She captioned the post, "I love you… even that is an understatement."Two months later, the pair made their Red Carpet debut at The White Lotus premiere. Later, Alex shared another post saying, "the only things I want touching my body are @dolcegabbana and Andrew Form." The Why Women Kill alum is not shy about her relationship with the Purge director.The Most Romantic TributeSingle people gather here for "awwn" moments. Alexandra shared news of her engagement with her 20.9 million followers on Instagram in a lengthy romantic tribute. You may want to get your tissues handy for this one.Daddario starts by calling Form "the absolutely most wonderful man." She further states, "you handle loss, life, difficulty, people, with grace and compassion. You're a loving father, funny hardworking, honest, introspective, sexy, kind, and sensitive…."Love Like A Love SongAlexandra mentions that being with Form is like teenagers in love. She alludes to moments of chastisement from flight attendants because they were canoodling like kids in love."I love how we have been chastised and separated by flight attendants on multiple international flights because we are like teenagers." She continues, "Why does it feel so different? This is the love they talk about in poems and Ed Sheeran songs. Andrew you're the greatest, most formidable love of my life."Suffice it to say their love is "Perfect" like Ed Sheeran's song.An Encompassing LoveDaddario says Form makes her feel safe and secure. "You've taken the worst moments of my life and soothed them, just knowing that you existed when they happened makes my heart fuller and more pieced together."Though this is Form's second marriage after his 13-years union with Fast and Furious actress Jordana Brewster, there's no doubt he's all-in. Daddario ends her love tribute by saying, "I couldn't be luckier!" See the gorgeous diamond ring from different angles on E! online.