Singer Taylor Swift reportedly likes to keep 'mementos' from her previous relationships.

Taylor Swift

According to a source, the 25-year-old keeps an item belonging to each of her former boyfriends to remember the relationship and help her in writing songs.

Jake Gyllenhaal, John Mayer, Harry Styles

Taylor collects and keeps mementos from all of her relationships. She has a bracelet and a scarf from Jake Gyllenhaal, guitar picks of John Mayer's, a comfy T-shirt of Taylor Lautner's, a tie of Conor Kennedy's, and of course Harry (Styles') necklace. It's like she has a trophy case of her past loves,” the source said.

"She uses the mementos to help her remember her relationships and write emotional lyrics," the source added.