Why does he act this way?

Just curious......my libra male friend acts weird around me, a brief history....We've known eachother for about 20 yrs, lost contact for a long while, came back into contact, renewed a friendship which somehow unofficially ended up being a FWB scenerio, that ended in October, sence then we've been strictly friends we do however flirt with eachother but do nothing physical. So now we are just friends but he acts really weird around me, like when we talk he mumbles alot & nervously plays with things, he makes little remarks under his breathe & when I ask what him what he said he says nevermind.....he's 30 but he acts like a 14 yr old boy around me, it's cute in a way but also kinda weird. Any idea as to why he may act this way around me?

Don't read into it too much...Those actions seem like common traits in Libra men.My ex behaved exactly like your friend , even when we're friends. He's 23 ...I thought he's weird but now reading yours I realise 23 is still ok to act like that 🙂