Blue Sargent held a special place in each of her Raven Boys' hearts. Though if you ever mentioned that fact to Ronan Lynch you'd be swiftly thrown from an upper window at Monmouth. He's done it before.

But still the fact remained. Each boy loved her in their own way.

Adam Parish had a peculiar kind of love for Blue. A tainted kind. He'd thought once that he could find himself with her. There was longing and rejection, but there was always admiration too. Blue fought harder than anyone for what she believed in. He was inspired by how she was never anything but Blue. He wanted all the right things to happen to Blue because it shouldn't have been any other way.

Ronan Lynch would never admit that he secretly loved the way she fought him and called him out. Blue challenged Ronan and was never afraid of him. His love was platonic, that of a sibling. A sister that he had never had and never knew he wanted. Blue and Ronan were opposite sides of the same coin. They got along as often as they didn't; and he wouldn't have it any other way. His ferocity to keep her safe blunted the jagged parts of his shattered personality.

Noah had a love for Blue that rivalled Gansey's own. He was in love with Blue, but not in the conventional romantic or sexual ways. It was completely pure.
For Noah, she represented life. Not because she made him feel less dead, but instead she embodied life. Blue and Noah were kindred spirits and she was everything. She was all that was right in the world. And in another life, they both knew they could have had it all together.

For the longest time, Richard Gansey III was afraid of Blue Sargent.
Gansey had been scared of everything Blue represented. She made him question everything, every decision, every thought, every act.
His mind warred with his heart long before he realised.
Blue brought out the very best in him with nothing more than a gentle smile of encouragement.
Gansey denies himself Blue. He's well aware that she could very much be the death of him, and yet he knows he would go willingly if the end were in her arms. To be a part of something so powerful it had been preordained.
Gansey's small Henrietta family was now completed, and still he denied himself anything more than the secret brush of hands in the dark. Whispered words late at night on the telephone. Because he knew that at the bottom of all the obstacles before them, Gansey knew he would never deserve Blue, he would never really be good enough. He couldn't give her all the things she wanted and deserved.
Gansey has a love for Blue that is real, twisted, and reserved, tangled up in what was right and what he wanted.

Blue Sargent is the soul of The Raven Boys. She is the living breathing heart that make up the whole entity. Her boys had never even known they needed her, and now, she was such an integral part that they wouldn't know how to cope without her. Without Blue, they were just four boys chasing the impossible.

Gansey never tells her how he pushes himself to be better because of her.

Ronan never shows that he would cause Hell on Earth if anything ever happened to her.

Noah didn't need to thank Blue for letting him use her energy.

Adam doesn't need to ask Blue for grounding and guidance.

Deep down she knows. They all know.