Britney Spears is reportedly desperate to marry boyfriend Jason Trawick.

The "Hold It Against Me" singer - who has been married twice before - has told friends she wants her partner of two years to propose by the end of the year as she wants a normal family life for her and her two sons, Sean Preston, five, and four-year-old Jayden James.

"After all her ups and downs Brit is craving stability - hence her broodiness at the moment - and she just wants to settle down with Jason and do it all again the right way," a source said.

Britney -- who split from husband Kevin Federline in 2006 after two years of marriage, while her union with childhood friend Jason Alexander was annulled in January 2004 -- recently spoke about agent Jason, saying how she loves how normal and grounded their life is together.

"We're really normal. We just like to watch movies. We work out a lot. We love to work out. We do stuff together like that. We take walks."