Zach was just glad that Colin still loved him and stuff. Well, he hadn't thought that had changed. Zach knew Colin loved him, but that didn't mean Colin wanted to be with him. The two had...had the potential to be different. And when there were other...when other people were better at this than Zach, and maybe what they wanted matched better what Colin wanted, that scared him. And Zach wanted Colin to be happy, even if it weren't with him. But he really really wanted it to be him.
"Why would Justin be sad that you love me?" Zach was confused. Justin had known about Zach before, and Zach had known about Justin and Colin, well not tons of details but that they were...together-ish. And they'd gotten to be together a lot more than Zach and Colin had been because of being on the run together. And now Justin was back...
"Um, so...do you want to go...first or, um, should I? I could try to explain...better, um," Zach was already starting to stumble. That wasn't super good. But he actually did like growing up. And he wanted to grow up and become more mature and become a dad and stuff.