beta
Guys, you can set boundaries and put limits in your workplace. His boss -Onodera- is being unfair to both of them (I don't remember other guys name); first you can't use a worker to "help you communicate with clients", or take him everywhere because he understands you better, and then not take the other student under your wing too. This can set an unbalanced relationship in the work place, and it can create rumors. Just like it happened with his friend, his friend knows Shizuma, but still couldn't help himself from imagining things.
Now, Shizuma is a person who has problems setting boundaries, and everyone confuses that with being nice. There should be boundaries with your boss and your ex-girlfriend, especially when they are damaging your current relationships. And even more if you know that if you don't put those boundaries and limits, those relationships (with boss and ex-girlfriend) could evolve into something you don't want, and they can say or do things that are damaging to your relationship. He is young, but he has to learn sooner or later. Your ex-girlfriend cant put a tracker on your phone and still tell you that they like you and stick to you in front of your boyfriend. And no, your boss can't grab your underwear and keep it in his coat; it doesn't matter if you are a man or a woman.
Minato is right in taking his space, especially if he is uncomfortable or processing his thoughts. People don't always say they are jealous because they may believe they are in the wrong, they are imagining things, or they are possessive. It's alright, he is going through a process of change.