People.com Entertainment Music Travis Barker Shares PDA-Filled Birthday Tribute to Kourtney Kardashian: 'You're a Blessing' "Kourtney seems very happy with Travis," a source tells PEOPLE of the couple By Maria Pasquini Maria Pasquini Associate Editor, Human Interest - PEOPLE People Editorial Guidelines Published on April 18, 2021 03:30 PM Share Tweet Pin Email Travis Barker and Kourtney Kardashian. Photo: Travis Barker/Instagram Travis Barker is celebrating Kourtney Kardashian on her birthday. As the Keeping Up with the Kardashians star turned 42 on Sunday, the Blink 182 musician, 45, penned an extra special tribute to her, which included his first-ever photos of the couple on social media. "I F-- LOVE YOU! 🖤," Barker captioned the PDA-filled slideshow, featuring multiple photos of the pair kissing and embracing. "YOU'RE A BLESSING TO THIS WORLD. HAPPY BIRTHDAY @kourtneykardash." In honor of her birthday, Barker also gave her a massive floral arrangement, which included all of her "favorite flowers." "Travis often spoils her and he gave her the most amazing, beautiful flower arrangement for her birthday," a source tells PEOPLE. "They are celebrating with her family today." "Kourtney still seems very happy with Travis. He is very into her. He constantly gives her compliments and attention. You can tell he is thrilled to be dating her," the source adds. "Kourtney is soaking it all up and enjoying life." Travis Barker and Kourtney Kardashian. Travis Barker/Instagram Kourtney Kardashian Celebrates 42nd Birthday with Romantic Gift from Boyfriend Travis Barker Travis Barker and Kourtney Kardashian. Travis Barker/Instagram Ahead of her big day, the Poosh founder showed off Barker's romantic floral arrangement, which includes strings of individual flowers suspended in the air. "Tulips and gardenias are my favorite flowers," she wrote alongside one photo of the thoughtful gift. "My entire house smells yummy." Kourtney Kardashian's 42 Sexiest Photos in Honor of Her 42nd Birthday Kourtney Kardashian/Instagram Want to get the biggest stories from PEOPLE every weekday? Subscribe to our new podcast, PEOPLE Every Day, to get the essential celebrity, entertainment and human interest news stories Monday through Friday. Travis Barker/Instagram The unique floral display also earned raves from her sister Kim Kardashian. "I just walked into the most gorgeous flower arrangement," the SKIMS founder said in one Instagram Story clip. "This is so beautiful. I've never seen anything like this." Later that night, Barker and his girlfriend also shared a photograph from an early birthday dinner. "My first birthday wish," Kourtney wrote alongside the dessert snap, which Barker also shared on his own account. RELATED VIDEO: Kourtney Kardashian Started Dating Travis Barker as She Was Ready for a Relationship with a 'Mature Guy' In January, a source confirmed their relationship to PEOPLE, and Kardashian and Barker made things Instagram official over Valentine's Day weekend. A source previously told PEOPLE that the couple has spent time with each other's families since they started dating, and that he had already gotten the stamp of approval from the Kardashian-Jenner family — even celebrating Easter together with her family earlier this month. Barker shares daughter Alabama Luella, 15, son Landon Asher, 17, and stepdaughter Atiana De la Hoya, 22, with ex-wife Shanna Moakler. Meanwhile, Kardashian shares sons Reign Aston, 6, and Mason Dash, 11, as well as daughter Penelope Scotland, 8½, with ex Scott Disick. "He's liked her for a long time and she just got more open to the idea. He's a good guy and a really great dad," an insider told PEOPLE in January of the couple. "Her family and friends all really like him. Their kids all get along too, which is sweet."