My crush and I are both super shy, what do I do?

Alright, this actually isn't about me, but one of my friends.
Basically, he's really cute, but he's also fairly shy. Once you get to know him though he's super funny and a total sweetheart.
The girl he likes is really quiet and pretty shy. She's gorgeous and has a lot of friends.
The two of them have Engish together and he really really likes her. But he can never get up the guts to talk to her, they've spoken before but every time she's always started the convrsation. I've told him that before he can really do anything he has to talk to her and become friends, but he gets nervous every time he sees her. I really want to help him but I have no idea how I can. I can't even give him good advice because I've always been loud and outgoing, so I don't understand what it's like to be in his shoes. Please help me, personal experience and advice to give him would be amazing Thank you all!
My crush and I are both super shy, what do I do?
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