In the comics, John Constantine's sexuality is indeed shown to be bisexual. This aspect adds depth to his character and is part of his complex personality.
John Constantine in DC Comics is a master of magic and trickery. He's constantly dealing with demons and other supernatural threats. His character is a blend of bravery and cunning, making him a fan favorite.
Some of the best John Constantine graphic novels include 'Hellblazer'. It's a classic that delves deep into the dark and supernatural world Constantine inhabits. The stories are filled with complex characters and moral dilemmas.
It could be a very intense love story. John Constantine is a complex and brooding character. The reader would likely be drawn into his dark world of magic and the supernatural. There would be moments of great passion, but also of danger as his enemies might target the reader to get to him.
One of the great ones is 'Dangerous Habits'. It really shows Constantine's character well, especially his struggle with his own mortality and his devil - may - care attitude towards life. Another good one is 'Original Sins' which delves deep into his past and the sins that have shaped him.
Alan Moore was one of the early and important creators. His work on the series really set the tone for the dark and gritty world of John Constantine. He introduced a lot of the complex themes and the morally ambiguous nature of the character.