YOU SAID:
i wish he would be my boyfriend and ask me out
INTO JAPANESE
彼が私のボーイフレンドになってくれるといいのに
BACK INTO ENGLISH
I hope he will be my boyfriend
INTO JAPANESE
彼が私のボーイフレンドになることを願っています
BACK INTO ENGLISH
I hope he will be my boyfriend
You've done this before, haven't you.