The first time that Jasper saw you he caught waves of your happiness and the sweet scent that you seemed to leave everywhere you went, not too strong to be his blood singer (thankfully) but enough to make him want to be by your side, and it made him feel things he never experienced before; Carlisle told him that he had found his mate, at least that's what he believed when his son came to him looking for advice. Jasper never thought he would found his mate, especially his "happy forever" as Alice told him once, but it happened.
As soon as he could he got closer to you, starting small talk in the few classes that you shared, eventually waiting for you outside the classes he didn't have with you (which made him rather mad, he even considered complaining to the school, but decided against it). He always knew how you felt and comforted you when needed, he was happy when you were and when your mood seemed to fall apart, he was there next to you.
What he didn't know was how his brother felt about his mate. Jasper had been quiet about him finding (Y/N) and he didn't felt the need to introduce her to his family as quickly as Edward did with Bella, he wanted to do things the "old way" and he wanted to make sure that you were comfortable enough, sure, you were dating, but he still felt like it would be a lot, so he low-key kept things a secret. But his family knew, and they were more than content with the idea of Jasper presenting the girl that was making him happy, even Rosalie was excited. But the excitement didn't last too long.
The first thing that Jasper noted when he crossed the front door was how tense things in his house where and as he walked down the stairs he saw his family spread out in the living room. Soon, a wave of different emotions flooded through him, but the strongest one was fear and regret.
"What's going on?" he asked as he stood with his arms crossed and an expressionless look on his face. At first, no one answered him and as he was about to speak again, Emmet spoke with a harsh tone.
"You need to get away from (Y/N), you can't bring her here"
Jasper was definitely taken aback with this and he was interrupted again without having the chance to speak.
"What Emmett means is that he found that (Y/N) is his blood singer, Jasper, it's dangerous" Carlisle said to him with his usual soft voice, but Jasper knew if he still had blood flowing through his veins, it would definitely be boiling.
"And just because of you..." he said pointing his finger to Emmett how now was looking down at the floor, clearly ashamed of the way he felt towards his brother's mate "...I just have to leave the one thing that makes me want to keep exiting? I think not" Jasper didn't notice how he got closer to Emmett and how his posture changed, implying that if he had to fight with him, he was ready. "You're really delusional if you think I will stop loving her just because you can't control your animal instincts" he spat harshly to Emmett.
Emmett got up prepared to fight with Jasper, but Carlisle grabbed his son and Edward rapidly grabbed him by the arm.
"Maybe there's something we can do to fix this, right Carlisle?" Alice quickly asked, she didn't want his family to fight about this, even if she could see the future, she wasn't sure about how this would end, but a fight wasn't in her plans.
Esme shared a knowing look with Carlisle who just sighed, not that he needed to let air out, but he was mentally tired already.
"You can always spend time with the Denali, I'm sure Tanya wouldn't mind having you over for some time and helping you gain control, Edward did it before, you should be able to do it as well" He explained calmly to Emmett who just ran his finger through his hair as he contemplated the idea. He sure did not want to spend time away from his family and his mate, but he also didn't want to ruin Jasper's happiness, he knew everything he went through and it made him feel terrible that he was an obstacle.
After a short period of silence, he quietly said "I'm doing it"
Jasper had never felt such relief as he heard those words come out of Emmett, he wouldn't have to distance himself from you, and that was enough for him to be labelled as the happiest men "alive".
He was ecstatic, so much that he didn't even stay on his house to hear the rest of the conversation he just started running through the forest to your house, he rapidly got to your front door and knocked lightly. He was shortly welcomed by you, but before you could say anything he had his lips pressed against yours, his hands resting on your hips bringing you closer to his body; and even if you didn't respond at first you quickly reacted and pressed your hands to his chest and slowly brought them to his neck, scratching his hair lightly.
Once you separated he beamed at you and you couldn't help but smile widely at him.
"Any particular reason you just showed up in here and kissed me?" You asked chuckling.
He shrugged "Do I need a reason to visit my girl and kiss her?"