Friendly hug?

How would you feel if your “friend” (she’s married and part of your friend group but not super close to you & your fiancé) squealed, ran up and hugged super hard your fiancé at her place of employment in front of other men(she works at a place where it’s almost entirely men).

My fiancé went to get paint supplies where a friend of ours works at. We are not super close to her but he’s known her since high school and we hang out maybe once a month or so. He told me he walked in to her place of work and she saw him, squealed and ran up to him and give him this huge, tight hug. I wasn’t with him at the time and he told me about it once he got home and how weird & uncomfortable it was. I’m feeling pretty upset about it because she never hugs me, never mentioned she saw him, she NEVER acts that way when we are both there with her, she’s married and it’s just respectful boundaries… girl code. I would never hug her husband like that, or any of my other friends husbands. I’m at a loss.