Junpei had never really been in a relationship before. Not even many friendships, which was fine. He didn't need anyone, he was fine being alone. Somehow he'd managed to get himself a partner though, which is very surprising. He didn't think anyone would ever love him like that.
His partner is the sweetest person ever though. They're the only people he's really okay with touching other than his mother. They aren't going to make it though. He can feel it inside of his heart. They aren't going to last and it makes him really sad.. He hasn't ever felt teenage love until now and he's always wanted to experience it. He has it and now he feels like it's going to end.
You were everything he could ever want. You were sweet, cute, funny, and very.. Accepting. You were so cute, you always hugged him and stuff no matter what. You even made an obnoxious little 'mwah' sound when you kissed him.
You accepted all of his flaws, though he always isolates himself when he feels like things are going to go bad soon. Even if he finally feels like things are going great in his life, the second he gets a bad feeling he isolates himself.
The two of you were sitting in his room, since you came over after he'd isolates himself again. He just felt like something was going to happen soon and he couldn't stand it.