if i want cry ,can i cry on your shoulder是什么意思?

if i want cry ,can i cry on your shoulder是什么意思? Even if I hurt want to cry I want to cry i want cry I want cry If i can smile ,i won not make you cry I don't want cry cry I want to cry!I don't know what can i do!I'm very sad! I just want to cry.I just want to cry. I dont want to cry I really want to cry I WANT CRY.BUT I HAVE TO CONTROL!I DON'T KNOW WHY.WHO CAN TELL If I will cry for If I can I want protect you for a lifetime If i can,i want to love you forever!If i can,i want to love you forever I'm want to cry .But I can't at this moment.Because I can just to stand my tear If you want to cry.I will lend me shoulder to you 是哪首歌If you are alone,I'll be your shadow.If you want to cry,I'll be your shoulder.If you want a hug