Britney Spears' relationship with Jason Trawick may well be on the rocks, though it seems her sister Jamie Lynn is ready to marry her businessman boyfriend Jamie Watson, who tells the New York Post's Page Six that the couple are seriously discussing tying the knot.

Jamie Lynn, 21, has been wearing a ring on her engagement finger for months, though Watson, 30, insists that he gave her the piece of jewellery for her birthday, not as a signal of his intentions. "I think promise rings are dumb. And Jamie Lynn doesn't care that much. She's not too picky," he said. Watson revealed that he and Spears have discussed the possibility of marriage though are still figuring out the finer details. The couple have had their fair share of breakups, though the groom-to-be insisted, "We've been back together for a while now."

Jamie Lynn, the younger sister of global superstar Britney, splits her time between Kentwood, Los Angeles, and Nashville, where he's trying to launch a country music career. "I asked her the other night what the hell is taking so long," Watson revealed of his girlfriend's new material, "but she's really particular about her stuff. She's trying to do it right because she knows people will be watching."

Watch Jamie Lynn Spears performing in Nashville: