'Real Chance of Love' Star -- Fighting Stage Four Cancer

One of the guys from the VH1 reality show "Real Chance of Love" has been diagnosed with STAGE FOUR colon cancer ... and is hospitalized while doctors come up with a strategy to attack the disease.

TMZ has learned Real ... real name Ahmad Givens ... is getting treatment at Cedars-Sinai hospital in Beverly Hills.

A rep for Real -- who starred with his brother on the popular dating show 'Real Chance' -- tells TMZ he first got sick in January with what he thought was the flu.

We're told 33-year-old Real went back to the hospital at least 4 times and was initially told something was wrong with his liver -- but last week doctors informed him it was colon cancer.

Stage four generally means the cancer has spread to other parts of the body.

We're told the rapper-turned-reality-star will remain hospitalized at least until docs figure out what kind of treatment -- chemotherapy, radiation, or both -- he will require.