”不知道为什么，我突然爱上了你，但是我很被动，怎么也说不出口我爱你，怎么办？”请把这句话翻译成英语

I don't know why I fell in love with you all of a sudden,
though, I am so passive that I cannot say I love you anyway,
what can I do?

i don't know why i fell in love with you in a sudden?
and i was passively that i couldn't tell you how i love you?
what should i do?

I do not know why fell in love with you Suddenly , but I am very passive,I don't even know how to say out/tell you that I love you. what shall I do.

I don't know why I suddenly fell in love with you,but I'm passive and no matter how I try,I can't never say "I love you". What can I do?