Idealize

Young men make great mistakes in life; for one thing, they idealize love too much.

Source: tatoeba (3039974)

A sociopath would idealize you one minute and demonize you the next minute.

Source: tatoeba (9793878)

We idealize everybody’s thinking, and even our own access to reasons, blithely attributing phantom bouts of clever reasoning to ourselves after the fact.

Source: tatoeba (11314821)

People tell me that I wouldn't be so anxious for a lover if I knew the kinds of problems which such a relationship brings, to which I reply that, yes, perhaps I am idealizing somewhat, but basically I know that people aren't plastic, and that where there are human beings there are problems, and, all the same, I think it can be worth it in the long run if there is honesty on both sides.

Source: wiktionary