to put it bluntly, to be frank with you, hate to break it to you, if you ask me why

to put it bluntly 直白來說( blunt:鈍的
to be frank with you 坦白說
frankly speaking 坦白說
hate to break it to you 真的不想這麼說
if you ask me 5w1h 如果你問我(放句首通常後面會接滿大膽的說法