How Long is Forever?

Gerard walked the dark alleyway with his long-time boyfriend Billie.  They had just finished a dinner-movie date and were heading back to their apartment in Manhattan.  Along the way, one would stop the other with a gentle kiss. Then they would continue on their way home. They had been together since high school. Billie had known he was bisexual since he was a freshman, but Gerard didn't know until he had met Billie their junior year. And just last year, when Billie had asked Gerard to move in with him, Gerard had known that he wanted to spend the rest of his life with Billie, but he wasn't sure Billie felt the same.
Billie stopped Gerard again to kiss him gently on the lips, but, instead of pulling away and walking ahead, Billie reached into his front pocket, pulled out something which he quickly hid behind his back, and got down on one knee.
"Gerard, we've been together since junior year, but I knew the minute I saw you for the first time freshman year that I wanted to be with you. I finally worked up the courage to ask you out two years later. Since then, up until about a year ago, I've been working up the courage to ask you to move in with me. Now, I knew for a very long time that I would be asking you this question someday, but I just didn't know when. I've had this in my pocket for about two months." He held up a little black box. "I've been carrying it in my pocket for all of our dates, y'know, just in case I thought the time was right. And right know, I think it is, so, Gee, will you marry me?"
Billie opened the black box to reveal a shiny, silver ring. Gerard looked closer and saw that it had 'Forever' engraved on it. It was perfect.
At first, Gerard didn't know how to respond to Billie's question. He knew for a fact he wanted to marry Billie, but he just didn't know how to answer him. It wasn't every day that the love of your life asked you to marry him. 'Yes' seemed too simple for a question as huge as that.
As Gerard thought, Billie grew impatient.
"Gerard?" Billie asked. Gerard looked down at Billie. He looked so adorable. He was still bent down at the knee and his jet black hair shooting in every direction. The moonlight seemed to make his emerald green eyes sparkle. He bent down to Billie's level and kissed him. He had, without meaning to, given Billie his answer.
They stayed like that for a while; kneeling down in the middle of the usually busy sidewalk about halfway between the cinema and their apartment. They heard footsteps approaching, but they didn't care. Whoever it was could just step around them. The footsteps got louder and louder until they stopped right in front of the newly-engaged couple in the middle of a sidewalk. Billie tried to ignore the random pedestrian until they went away, but he just stood there. Billie pulled away from Gerard and stood up.
"Y'know, we don't need an audience, man." Billie tried to look tough, but his short size wasn't helping. He tried to get a good look at the man, but he blended easily with the night sky in his black hooded jacket.
"You're blocking the path." The hooded figure said.
"Why not just go around?" Gerard asked, still on his knees.
"Look, man, I don't like to be told what to do!" The hooded figure reached in the front pocket and pulled out something Billie couldn't really get a good look at.
He heard Gerard gasp behind him. Billie turned around to face his now fiancé. His face had gone white and his hand was covering his mouth. What could be freaking Gerard out so much? Just as Billie turned back around to face the hooded man, he felt a white hot pain in his chest.
He heard Gerard scream. He saw the hooded man pull something out of his chest and run away. He looked down and saw a growing red circle on his white shirt. He collapsed on the ground struggling to breathe.
Gerard rushed over to his fiancé. Billie's face had no emotion. No sign of pain or shock or even fear. He was staring blankly up at the full moon while his red chest struggled to rise and fall.
"No, oh God, no! Billie! Don't die, Billie!" Gerard's vision was blurred with tears. He took off his jacket and held it against Billie's bleeding chest. Billie's eyes were closing and his struggled breathing was getting slower and faint.
"Oh, God, oh God." Gerard pulled out his cell phone and dialed 9-1-1. After he explained to the operator what had happened and hung up, he applied more pressure to Billie's stab wound with his jacket.
"Stay with me Billie! Please don't die!" Gerard pleaded. "Please! I need you!"
Billie's eyes were barely open and his breathing was so faint, Gerard couldn't tell if he still was or not.
"G-G-Gerard." Billie managed to choke out.
"Billie! Stay with me! An ambulance is on its way here!"
"I-I-I…can't m-make it." Billie whispered.
"Sure you can! Just keep breathing. Billie, please keep breathing!" Gerard was yelling now.
"I-I love…you." Billie whispered right before he closed his eyes.
"No!" Gerard put his ear against Billie's chest to make sure he was still breathing and he heard his fiancé's final heartbeat.