Confiding in someone is an act of trust that requires great comfort and understanding. When you're seeking someone to confide in, you want to be sure that they can handle your vulnerability and won't judge you. Luckily, there are a plethora of synonyms and phrases that can convey the same meaning. You can say "open up to," "share with," "reveal to," "entrust with," "unload on," "vent to," or "pour out to" someone. Each phrase has a slightly different connotation, but they all communicate the same idea of sharing one's innermost thoughts and feelings with someone else.