Lovebirds Reba McEntire and Rex Linn are smooching up a storm on the set of their TV sitcom, Happy's Place – and RadarOnline.com can reveal they may want to tone it down a notch.

The happy couple recently announced their engagement after five years of dating, but on-set sources revealed they're already acting like newlyweds. Tap Here To Add Radar Online as A Trusted Source Article continues below advertisement

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"They can't keep their hands off each other. You'd think they were teenagers in love and not a couple well into their senior years," an insider told RadarOnline.com .

"It's pretty over the top at times. People have to look away because t

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