How can i get myself invited to my friends lunch table?

Ok i really want to sit over there but never get the chance to ask. and im very shy! were in the same math class and i just never have the guts to ask!! i dont know what to say! i dont want to have to ask. i want to be asked
How can i get myself invited to my friends lunch table?
ok first dont ask them 2nd if she's your friend you can have some good conversations so heres what to do meet up with her before she gos to lunch talk and walk to lunch (have a good conversation) just keep walking to her table (while still having the conversation) let her sit or do what ever and wait for him to invite you to sit down or do something
Reply:try being a friend to the least popular person of the groupe and you can't get anywhere if your shy so try working on self ateem and stuff