Extra clingy when other men are around?

I just met the man I’m newly dating’s family. He was acting very different in front of them. He has multiple brothers and we spent time with the two that were also in town and they were cool, very funny guys.

However, every time one of them would say something funny and I would laugh, he would get overly touchy— bear hugs, wrapping himself around me, kissing me, a lot of touching. It made me a bit uncomfortable and I think it made his brothers uncomfortable too. Very territorial which I think is unnecessary given that they’re his family.

He has never acted like this and I don’t know how to tell him that I didn’t like that. I’m not a very touchy person in front of others in the first place— maybe a hand hold or occasional kiss, but this was a lot.

Why was he doing this? How can I speak to him about this without hurting his feelings? Is this a red flag?
Extra clingy when other men are around?
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