My boyfriend does not have material desires. You could also say that he has no desire to possess things. He is a rare person for this age.
ご質問ありがとうございます。
"My boyfriend does not have material desires."＝「私の彼氏は物欲がありません。」
"You could also say that he has no desire to possess things."=「彼は所有欲がないとも言えます。」
"He is a rare person for this age."＝「彼はこの時代には珍しい人です。」
ご参考に。
アメリカ合衆国 
