The on-off relationship of Justin Bieber and Selena Gomez is again lit up as a surprise duet collaborated and song by them has been released.

The number dubbed, ‘Strong’ and rumored to reflect their own rocky relationship, is something that the two celebrity singers have been working on for months. The new duet was played on Drake’s OVO Sound Radio recently.

The release of ‘Strong’ has created a lot of excitement as fans and media are again looking at the two of them getting together. Selena, 23, and Justin Bieber, 22, have been working and collaborating on this song for some months now, reported Hollywoodlife.com.

The source told Hollywoodlife.com that Justin and Selena did not record the song together and that they worked on it separately; however, both were very involved in the creating and the writing process of the number. Even though they were not the main song writers, they have been given credit as writers along with others.

The source added, ‘This has been planned for months and they have been working on it at the same time that they were working on their own albums’. Justin feels that collaborating would be very therapeutic for both of them and their past could lead to some excellent business propositions as they were both aware of how the other ticks.

‘Strong’ is a slow jam-number that talks about a brutal, complicated relationship. The lyrics convey that both are trying very hard to give each other as much love as they can and yet they are messing up. Selena starts the song with, ‘There’s no sophistication in my lack of patience. I’m just wishing you were better at communication’.

The song then goes on to give their independent opinions on how to overcome a difficult breakup. Bieber later sings, ‘What should I do? Should I go? Who do I talk to? Nobody knows. Who knows the answer to all of my questions? When will I get over this?”