ISLAMABAD (NNI) - Bilawal Bhutto, the co-chairman of the ruling Pakistan Peoples Party, likes to let his hair down but doesnt know whom to trust, a cousin has said. Bilawal, the 21-year-old son of slain former premier Benazir Bhutto and President Zardari who is a student at Christ Church in Oxford, has a fun side to him, said his cousin Nicholas Khan-Roper. What I like about him is that he has a fun side, he lets his hair down with us, Khan-Roper, the London-based son of Benazirs first cousin Sidi Mohammed Muzaffar Khan, told a London newspaper. But its hard for him to know whom to trust, Khan-Roper said. Last October, The Yacht London, a 1920s steam vessel that was leased by Khan-Ropers family, was the venue for Bilawals 21st birthday bash. Shortly after Bilawal was appointed Benazirs political heir, pictures of him partying were splashed on the Internet. Bilawal, however, claimed the pictures were doctored. Khan-Roper and his younger brother Jason Khan were very close to Benazir. The slain former premier was like a second mother to Jason, 37, who lived with her for 10 years after the death of his mother, and was actually on her campaign bus when it was targeted by suicide bombers in October 2007. The Yacht London has been used to entertain dignitaries, including Benazir. The Khan-Ropers also keep in touch with Bilawals sisters Bakhtawar and Asifa, both of whom are studying at Edinbugh. They are like my sisters, said Jason, who was living with Benazir when Asifa was born. However, not every Bhutto is on board - for instance, Fatima Bhutto, who recently published her book Songs of Blood and Sword. Fatis (Fatimas) father was the most important thing in her life, explained Jason. The unfortunate thing was that her aunt was the prime minister. If she hadnt been, I dont think the logical train of thought would have led there. One can understand why she is upset, but I was there when Fatis father was killed and I saw Benazir. Devastated is not the word. She collapsed, she had to be carried. But Fati wasnt there so she doesnt know that..., he added. Jason feels that the fourth generation of Bhuttos will reunite. They will definitely reunite, maybe not today or tomorrow, but soon, he said.