i do miss u 为什么加DO?

i do miss u 为什么加DO? MISS U WHAT SHOULD I DO? I do feel lonely when I miss you 为什么要加do呢 I do not want u to miss me 是什么意思 my daring,do u know how much that i miss but i do do feel that i to to will miss you much中为什么do do和 t really do i miss you Do I miss you know imiss u ,but do you miss me?of course ,i know the answer.什么意 i miss she ,what should i do? I miss you what shall I do I miss you.I’ll really do.