By 1971, he bacame romantically linked to Marianne Faithfull, who was known for her singing and modelling career and for her relationship with Mick Jagger. According to Faithfull: "Jean was a horrible guy, someone who had crawled out from under a stone. Somehow I ended up with him...it was all about drugs and sex."
Marianne Faithfull, in her autobiography, Faithfull, written with David Dalton, recalls: "We were staying at L`Hotel [in Paris] when he got a call from Pamela Morrison and had to leave very suddenly.
«Jean I want to go with you,» I told him. «I want to meet Jim Morrison.»
«You can`t. I`ll be back in a couple of hours.»
«Please, Jean, please?»
«Not now. Je t`explique later, okay?»
He slammed out of the room. He came back in the early hours of the morning in an agitated state and woke me up. I was very fucked up on Tuinals. I wasn`t doing smack at the time but I was taking a lot of downs. Then, for no apparent reason, he beat me up. [...] After the beating I lit a cigarette and asked him:
«So, did you have a good time over there? Aren`t you going to tell me why you`re in such a good mood?»
«Why? Where are we going?»
«Very funny. We just got here.»
«I want you to meet my mother. Hurry up!»
«Uh-oh...What happened over there?»
«Yeah. It`s fucked.»
He was scared for his life; Jim Morrison had OD`d and Jean had provided the smack that killed him. Now he was a small-time heroin dealer in big trouble. Jean saw himself as the dealer to the stars. Had he lived, he might have turned into a human being, but he was so young, he didn`t know. Nobody knew what the price was going to be."