Dua Lipa revelled in "doing research" on herself when she was single.

The 28-year-old singer, who is said to have been dating actor Callum Turner, 34, since January — and whose exes include Bella and Gigi Hadid's 24-year-old model brother Anwar — added her track Training Season, released in February, is a reflection on a string of dates and long-term relationships, mostly set up by her friends.