single-partner relationship
nounUK /ˌsɪŋɡl ˈpɑːtnə rɪˈleɪʃənʃɪp/
US /ˌsɪŋɡl ˈpɑːrtnər rɪˈleɪʃənʃɪp/
A relationship where two people are only with each other and no one else.
They have a single-partner relationship and promise to be loyal to each other.
RELATED WORDS
OTHER MEANINGS
2. A romantic bond in which both people agree not to date or be romantic with anyone else.
After months of dating, they decided to make it a single-partner relationship.
3. A marriage or long-term bond built on being faithful to just one person.
Their single-partner relationship has lasted for over thirty years.
4. A setup where a person has only one romantic partner at a time.
She prefers a single-partner relationship because it feels simple and honest.