Should I report my manager to HR?

My manager is a new guy. He started working there shortly after I got there. At first he seemed like an okay guy, however, he started to become really flirtatious with a coworker ( I’ll call her Jade) . He’s been rubbing her shoulders, resting his arm on her head, calling her his “pet” and he puts his foot on the back of her knee to try to make her fall when she’s carrying trays. We’re in such a small space, I’m always right there when he’s doing it and so is everyone else. Yesterday my coworkers and I were talking and I mentioned how he makes me uncomfortable because of what he’s doing to Jade and everyone agreed. It makes them really uncomfortable too ! I found out that she’s really bothered by it but she’s too scared to say anything. She’s really sweet and I understand why she doesn’t want to say anything.

Should I report my manager to HR?
Should I report my manager to HR?
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