Cher’s Boyfriend A.E. Edwards Fumes Over Kevin Costner’s Flirty Behavior!

Bachelor Kevin Costner has been making the moves on senior Cher and she’s basking in the attention – but it has her boytoy Alexander “A.E.” Edwards burning with jealousy!

Sources say that Kevin, 70, who was recently dumped by his wife of 18 years, made a spectacle of himself at SNL: The Homecoming Concert on Feb. 14.

When Cher, 78, performed in a mostly sheer black getup, the Yellowstone alum was in total awe.

“It was obvious that Kevin was completely bowled over by her performance,” spills an insider.

Kevin also managed to snag a seat next to her and then continued to fawn all over her.

“He was clearly tickled as a schoolboy to be sitting so close to her, and Cher was totally lapping it up and flirting back.”

But sitting on the pop icon’s other side was Edwards, her boyfriend of two and a half years.

“A.E. was very upset – he felt emasculated in the presence of a stud like Costner,” reports our spy. “It’s not like he can compete with Kevin, who’s the biggest star of his generation. Now that he’s seen how flirty Cher was with Kevin, A.E. worries she’s just keeping him around for arm candy while looking for more action!”

Tattlers snark the 39-year-old music exec has it coming, as he’s been resisting Cher’s pleas to put a ring on it and has been known to flirt with other ladies behind her back.

While the Strong Enough singer’s rep denies all talk of relationship troubles, our spy adds, “Kevin’s on the market and the make, and Cher’s going to snap him up whether A.E. likes it or not!”