AN: This is a bit longer then the first one. Enjoy (was inspired by a picture on Pinterest)
Clary POV
Clary looked at the rune, she was so proud. She'd been working on it for months, ever since she'd found out that Magnus and Alec were getting married. She knew what kind of powers this rune had and that if it fell in the wrong hands it would be incrediblee dangerous. However, she'd designed it so that it would be personal and only work one time. She really hoped they'd like it. Her mother was going to take on last look at it, to see if it needed changing or if it was safe.
Alec POV
He couldn't believe that he'd just married this gorgeous man or that his parents had been there without looking mad. He just sat there and stared at Magnus, taking everything about him in. He could sit there for eternity just looking at that stunning man, but he was interrupted by Clary.
"Hey, guys, congratulations!" Clary shoot them a huge smile and the boys thanked her. "So, I've got a gift for you guys, but I'd like if you could come with me and my mom and receive it in privacy" she sounded a bit nervous. Alec and Magnus followed her however, Alec was scared that it would be some huge thing that Jace had made to mess with him.
But when Jocelyn and Clary stopped there was nobody there, just them. They were in a small room of the institute with absolutely nowhere to hid. Maybe this wasn't Jace messing with him after all.
"Okay, so, my gift is optional" Clary said.
"We've been working on it for the past six months and it should be harmless and also it will only work one time, it's personally made for the two of you" Jocelyn continued. Alec was confused and had no idea what this gift could be.
"Okay, just spill it out, I'm so curious!" Magnus almost yelled and jumped up and down like a child.
"Okay, so I made a rune, you know a new rune, and it could give Alec immortality" Clary paused and took a deep breath "you don't have to decide now and I understand if you turn it down"
"But how would it even work? It's a very dangerous rune Clary, you're going to get a lot of powerful people after you. Also the Clave will kill you or worse" Alec said, he was very worried about Clarys safety if this got out.
"It can only be used once and only on you Alec. Also we won't tell the Clave, my plan is to say that Magnus used magic to make you immortal since you guys wanted to spend forever together" Clary answered and looked at Alec and Magnus with a smile. "You can wait for how long you want until you decide, it will work as long as you both are alive."
"What do you mean as long as we're both alive?" Magnus asked, he'd been quiet ever since Clary told them about the rune.
"It binds your life forces together, Alec can be immortal by sharing your immortality, but if you die Magnus so will Alec. Though you can survive without him and Alec could only die the same ways as a warlock" Jocelyn explained.
"I want to do it." Alec said, everyone looking at him in surprise, he guessed that no-one expected him to decide so soon, but he knew, he was certain that he wanted to spend the rest of eternity with Magnus, he just hoped Magnus felt the same.
"Are you sure that you want to live forever?" Magnus looked at Alec with concerned eyes.
"Yes, I want to be with you forever, the time we have now won't be enough, I want to live as long as you live" Alec said and kissed Magnus.
"I also want to spend forever with you, but before we do anything, can you at least sleep on it?" Magnus looked straight into Alecs eyes.
"Yes, I can do that, if it makes you feel better, but I've already decided. I'm ready to spend forever with you if you are" Magnus didn't answered Alec he just kissed him, it was a kiss full of love and when they looked over to Clary and Jocelyn again both of them cried. "That was so beautiful" Clary sobbed and Alec flushed, his face turing red as a tomato.
The next day
Alec POV
"This is going to hurt, like really hurt" Clary said sitting beside him with her stele in her hand. "Are you sure you want to do this?"
"Yes, just do it" Alec said, he just wanted it to be over so he could go on a honeymoon with his new husband.
"Okay, make sure that you never let go of his hand until I say so" Clary said to Magnus who nodded as a respons and gave Alec a quick kiss on the cheek "I love you" he whispered in Alec ear.
The pain was worse than anything he'd ever felt. It felt like his whole body would burst into flames but at the same time like he was turing into ice. He screamed and felt Magnus hand gripping his harder. He heard Magnus breathing quickly and it sounded as if he were in pain to. "My love, hold on, it will be over before you know it" he heard Magnus voice in his ear. Then everything turned black.
When Alec woke up he saw Magnus looking at him with concerned eyes. "How long was I out?" he asked.
"About an hour" Magnus responded "how are you feeling?"
Alec felt good, a little sore on the ribs where Clary had put the rune, he smiled at Magnus as he told him that and Magnus smiled back and said "it worked". Alec was so happy that he would spend eternity with Magnus and drew Magnus down kissing him. This was the best wedding gift ever, he'd forever be in debt to Clary.