Britney Spears has ended her 18-month relationship with David Lucado. It is being speculated that a video showing Lucado cheating on her has caused the split between the two.

The singer unveiled on twitter on Thursday by saying, 'Ahhhh the single life!' the 'Stronger' and ended the line by the word 'breakup'. Though the singer has given a hint of breakup, but she did not reveal the reason behind the end of the relationship. The video reportedly shows Britney's boyfriend making out and dancing with another woman.

After noticing the video, it is alleged that Britney dumped her boyfriend. A source said that Britney is quite upset. Currently, she is in Vegas, but will get through it. For a long time now, it was being speculated that both of them have broken up. But the pair proved the reports wrong by coming out looking happier and much in love than before.

Things turned bitter again and finally, the news of breakup surfaced. Since February 2013, Spears and Lucado were said to be in love with each other, just a month after she broke her engagement with agent Trawick. During happy times of her relationship, Spears was found praising Lucado a number of times.

In Las Vegas, Spears is busy with her 'Piece of Me' residency show. The performances will continue through February. Things seem to have changed so quickly for Spears as last October, she told, "I'd like to have more kids, settle down ... have kids - maybe twins - and get married".

But personal problems are not getting over her professional life. On September 9, Spears will be launching her lingerie line, The Intimate Britney Spears. All her focus is on career and two cute little babies.