Christina El Moussa
Christina El Moussa received a birthday kiss from boyfriend Doug Spedding. Pictured: Reality star visits the HGTV Santa HQ at Lakewood Center and celebrates the holidays with fans on Dec. 13, 2014. Getty Images/Jerod Harris

Christina El Moussa received lots of love from her boyfriend, Doug Spedding, on her special day.

On Sunday, the “Flip or Flop” star was spotted with Spedding, 55, in Beverly Hills, California, celebrating her 34th birthday. Christina looked chic and fab in her see-through black maxi dress as she stepped out hand-in-hand with the Orange Country, California-based businessman to celebrate another milestone in her life.

READ: Is Christina El Moussa’s boyfriend, Doug Spedding two-timing her?

In the photos shared by Daily Mail, the couple showered each other with affection and even shared a sweet kiss outside Montage Hotel. Spedding donned a blue suit with tie and black shoes for the occasion. The couple was reportedly went out for dinner to celebrate El Moussa’s birthday, presumably in one of the restaurants in the area such as Spago, The Palm and Mastro’s.

El Moussa and Spedding’s relationship seems to be getting serious. A source close to the pair previously revealed that they have a lot of similarities with each other, and they often bond over their shared interests. They have also already met each other’s children, who reportedly get along fine. “Christina and Doug are both homebodies. They like to hang out, BBQ and watch movies. They’ve enjoyed spa days, bike rides, nice dinners and sunset boat rides together,” one source told Entertainment Tonight. “All the children get along really well and they have fun hanging out.”

El Moussa and Spedding were also spotted together on the Fourth of July. They were snapped in Newport, California, cuddling on her luxury boat. The source revealed that the lovers were not alone as their children were also around to celebrate Independence Day as a family. “They spent the morning with all the kids at the pool, and then the day on Christina’s boat, tubing with the kids in the ocean,” the source said of how the couple spent the holiday. “During the evening they watched fireworks and lit their own sparklers.”

But while El Moussa and Spedding’s romance has been heating up, a woman recently came forward and accused him of cheating on her. “I’ve been seeing Doug for almost four years. He hasn’t officially ended our relationship. He was just with me three days ago!” Tracy Diaz told In Touch Weekly. She added that she believes Spedding “really likes Christina, but obviously, he’s not being loyal.”

Do you believe that Spedding is two-timing El Moussa and Diaz? What’s your take on their relationship? Drop a comment below.