Singer Taylor Swift has reportedly trained herself as a "love coach" to better advise her friends.

The "Blank space" hitmaker has previously dated the likes of Harry Styles, John Mayer and Jake Gyllenhaal and is currently romancing DJ Calvin Harris.

Swift is known to be an invaluable source of advice for friends including Jennifer Lawrence, Lorde, Gigi Hadid and Emma Stone, and she has been studying hard so she can give them the best possible tips and suggestions, reports femalefirst.co.uk.

"Taylor is very good at offering advice. She's secretly trained to be a love coach and was doing a course online. She qualified last month," a source told Grazia magazine.

The 25-year-old star has drawn up an advice guide to help friends going through a break-up and is also currently busy counselling Lawrence, who is dating Gwyneth Paltrow's estranged husband Chris Martin.

The source added: "Taylor has drawn up an 'ex rulebook' as a go-to reference for her friends who have recently split up with someone. She's also very good at advising her girl group on how to get more commitment from a man.

"She's telling Jen how to deal with her relationship with Chris, especially because he spends so much time with Gwyneth."