How do i ??????

how do iask for a crushes # cause what if he gives me the wrong number on purpose . he laughs and tells his friends gives me it and his parentspick up the phone and say awwwwwwwwwwhhhhhhhhhh tommy has his first girlfriend and then theyll ask to talk to my parents . what if he gives me his cell and we have aqurd silence times. i nneeeeeeeeeeeddddddddddddd addvice please help