Khloe Kardashian, Lamar Odom Celebrating His Birthday Together atHome: "He Is Hopeful"

Lamar Odom's 34th birthday is shaping up to be a very happy one indeed. The basketball player -- who, just a few months ago, was barely speaking to wife Khloe Kardashian -- appears to be back on good terms with both his 29-year-old spouse and her famous family. He even joined them in celebrating Kardashian matriarch Kris Jenner's 58th birthday on Tuesday, Nov. 5

"Khloe and Lamar started talking again," a source tells Us Weekly of the couple, married four years. "Over the last few days they started talking all the time. So [on Tuesday] she invited him to Kris' birthday party. He had a great time."

As previously reported, Kris celebrated turning 58 at a get-together with her loved ones at the Kardashian-Jenner brood's Calabasas, Calif., home on Tuesday night. Daughter Kendall Jenner -- who marked her own birthday on Sunday, Nov. 1, with a masquerade-themed meal -- shared a photo of the festivities on Instagram.

"Spontaneous dance party at the Jenners!" she captioned the shot, which showed a DJ set up in the backyard. "Come one, come all."

Odom, 34 as of Wednesday, Nov. 6, is now looking forward to his own little celebration. A source says the athlete and his wife are planning to spend his birthday together at home.

"Khloe invited him over and has a little party planned," the insider shares. "It may be just the two of them -- he doesn't know yet. But he is hopeful and going."

Time will tell whether an official reconciliation is in the cards for the couple, but Odom, at least, believes their bond is a lasting one. "We're wonderful. We're unbreakable," he told Us Weekly on Oct. 30. "That's why I wear my wedding ring. It is a beautiful ring. From a beautiful wife."