The 37 year old singer allegedly ended her relationship with her Bulgarian boyfriend who is 13 years her junior, after he refused to settle down. Nicole was first linked to Grigor back in November last year, but  their relationship became public January this year after they were spotted kissing at a tennis tournament in Australia. After few months of dating, the pair have reportedly split up after Nicole made it clear that she wanted to settle down and start a family, apparently Grigor wasn't ready. 

 A source told TheSunUK: 
“Nicole is at a different stage in life to Grigor. She really likes him but wants to settle down - something he’s not quite ready for.
It’s the situation she had with Lewis, which is why that relationship stalled. She’s aware she is not getting any younger and wants kids."
Nicole split from Formula 1 driver Lewis Hamilton in January last year after a seven year on/off relationship. Their disagreements over settling down and having children is said to have led to their break up.