Jealousy? That's a new one on me!

Jealousy is a complex emotion that encompasses feelings ranging from suspicion to rage to fear to humiliation. It strikes people of all ages, genders, and sexual orientations, and is most typically aroused when a person perceives a threat to a valued relationship from a third party. The threat may be real or imagined.

https://www.psychologytoday.com/intl/basics/jealousy