When [artist id="1162899"]Ray J[/artist] attended the [article id="1685466"]Billboard Music Awards[/article] in Las Vegas on Sunday night, he reportedly had a tense run-in with Whitney Houston's family. The following morning, he was hospitalized for exhaustion.

A representative for Ray J told CNN that he was rushed to the hospital Monday to be treated for exhaustion and jet lag after returning from a 32-hour business trip to China, where he performed a show and attended meetings. The singer apparently made a four-hour drive to Las Vegas upon his return to host a party for Prince Reigns Hair Serum, and he was later found in his hotel room "extremely disoriented" and "out of it."

Ray J's rep also made sure to point out that his hospitalization was not related to an incident that took place at the Billboard Music Awards on Sunday night. Ray J, who dated Whitney Houston on and off for several years, was seated in the same section as the late singer's family, which sparked trouble. Whitney's sister-in-law Patricia Houston asked security to forcibly remove Ray J from the section, but he refused. "Pat ruined what was a great opportunity to honor the woman who I loved," Ray J said later.

There's been no word yet on when Ray J will be released from the hospital. Since Whitney Houston's death, he has been outspoken about his grief, admitting, "I really miss my friend, you know, I really do. I'm still hurting." On Sunday night, Houston was honored with Billboard's Millennium Award, which her daughter Bobbi Kristina accepted on her behalf, thanking fans for their support.