A "loveless relationship" refers to a romantic partnership where there is a lack of emotional affection, care, or love between the individuals involved. Full definition
Amy Adams is Susan Morrow, an art gallery owner stuck in a seemingly loveless relationship with her husband Hutton (Armie Hammer). (thehollywoodnews.com)
In the book of Revelation, Jesus makes it clear that He won't settle for a loveless relationship with us. (relevantmagazine.com)
«I'd much rather be a single and attentive mother than trapped in a loveless relationship with their father!» (huffingtonpost.com)