Another week, another round of Jennifer Aniston and John Mayer marriage rumours.

Barely two months since the couple went public with their romance, insiders are already predicting wedding bells within the next year.

"Jen is so in love with John (that) they are already talking marriage," a source tells OK!.

"I would not be at all surprised to see Jen and John make it legal sooner rather than later. 

"In fact, I would be shocked if they didn't tie the knot before her 40th birthday in February."

The insider reckons that a trip down the aisle will top off a successful year all round for Jen.

"It took a while, but Jen is finally getting her life in order," the insider adds. 

"She has three movies coming out in the next six months.  She has a top-secret business venture she'll be announcing before the year's end.

"Her new house is finally nearing completion.  It's like her whole life is coming together and a wedding will complete the picture."