ɐkˈoːɹdɪŋ tə kˈæɹəlˌɪn ɹˈuːz, lˈaɪzənz lˈɔŋtaɪm bˈɪznəs mˈænɪdʒɚz dˈɔːɾɚ, hiː hæd ɐ vˈɛɹi lˈɔŋ ɹᵻlˈeɪʃənʃˌɪp wɪð dˈænsɚ slˈæʃ ˈæktɚ slˈæʃ kˌoːɹɪˈɑːɡɹəfɚ bˈɪli dˈænjəl ʌntˈɪl ðə nˈaɪntiːnhˈʌndɹɪd fˈɪfti z dˈænjəl dˈaɪd ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪksti tˈuː.
According to Carolyn Roos, Leisen's longtime business manager's daughter, he had a very long relationship with dancer/actor/choreographer Billy Daniel until the 1950s (Daniel died in 1962).