bliss (someone) out
phrasal verb with bliss verb uk/blɪs/ us/blɪs/
informal
（使）飘飘欲仙，（使）极乐无忧
to become, or to make someone, completely happy and relaxed
to bliss out on music 通过音乐达到极乐
I like to go off on my own - to sit back and bliss out in a darkened movie theater. 我喜欢独自外出——舒服地坐在漆黑的电影院里，乐在其中。