Petelgeuse Romanée-Conti/Relationships

Emilia
Petelgeuse knew Emilia when she was a child, often visiting her and her aunt Fortuna, enough to be described as being like a family. He cared about her deeply as he attempted to protect her with his life when Regulus and Pandora attacked her forest. Furthermore, Petelgeuse cried tears of joy when he met Emilia for the first time. He told her that she (Emilia) and others saved him. He had already known about her even before meeting her. However, after he went mad, he no longer recognizes her.

Fortuna
Like Emilia, Petelgeuse cared deeply about Fortuna, visiting her often and even helping her village by sending supplies. He risked his life to save her and went completely insane when Pandora tricked him into murdering her.

Beatrice
He was her manners teacher 400 years ago when Beatrice still lived with Echidna.

Flugel
Petelgeuse was shown to be acquainted with Flugel, as he apologized to him shortly before taking in the Witch Factors of Sloth during his battle against Regulus.

Sirius
Petelgeuse's proclaimed wife. Although Sirius loved him deeply, there is no hint that Petelgeuse ever reciprocated her feelings, due his blind "love" toward Satella.