WASHINGTON – Rumors are swirling that longtime couple Justin Timerberlake and Jessica Biel are tying the knot, headed to the altar, taking the plunge.

You get the idea.

Several insiders tell Us Weekly the couple of four and a half years were engaged in late December.

Apparently, Timberlake, 30, popped the question to Biel, 29, in the mountains of Jackson, Wyoming.

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