Jennifer Aniston has been sending perfumed notes to John Mayer.

The actress – who split from the singer in April – is reportedly struggling to get over her old flame and has good luck messages delivered to the ‘Gravity’ star’s dressing room before he performs.

A source said: “Jennifer sent John a hand-delivered perfumed note before one of his concerts recently.

“It read, ‘Play well, you always do’. It was sweet. Clearly she doesn’t want to let go completely.”

Friends of the 30-year-old singer claim Jennifer – who was recently romantically linked to her ‘He’s Just Not That Into You’ co-star Bradley Cooper – has stayed in touch with John’s brother and a reunion could be possible.

The source added to Britain’s Daily Express newspaper: “John hasn’t shown any interest in other women since the split, which is a break from the usual pattern.

“Who knows, this may not be the end of their romance. Neither seems very good at letting go.”

Jennifer – who since her divorce from Brad Pitt has dated several stars including Vince Vaughn and British model Paul Sculfor – recently poked fun at the “strange parallels” between her love life and movie titles.

She said: “I’m trying to be more careful than I have been in the past about the titles of movies that I choose to be in. It’s funny – I kind of noticed something a couple years ago that I have a strange parallel with movies I was doing and my life off screen. First, it was ‘The Good Girl’…which evolved into ‘Rumor Has It’, followed by ‘Derailed’.

“Then there was ‘The Break-up’. Followed by the lighter side, ‘Friends with Money’. If anyone has a movie called ‘Everlasting Love With an Adult Stable Man’, that would be great!”