Is he Jealous of my Success?

I have been dating this guy for about 2 years. He is 25 and did not finish college, and im not sure why. I am about to graduate from college and 移動する back ホーム and he will stay at his job that he does not like and continue living with his parents. We never fight または argue about anything and he does not like expressing his feelings または talk about what he is thinking. I have noticed many times where something is bothering him and try to talk to him about them but he will just shut me out and wont talk, so I gave him 宇宙 so not to prode at him and make him even もっと見る uncomfortable. One issue was the fact we havent had sex in the last 9 months, regardless of my attempts. I asked if he was cheating on me but he told me no. Last wednesday we got into a fight about a hot and ready pizza, both of us were hungry and I was busy doing homework and could not go get it. After giving him money to get the ピザ he refused but continued to bother me about it because he was too sore from working out and did not want to make the short (less than 5 min trip). He did not live with me exclusivly but he had stayed at my house for the majority of our relationship. He had clothes and his プレイステーション at my house. That same week on friday, after our discussion over the pizza, i did not see him. he would not come over after workouts (which he usually would) and he texted me friday night and 発言しました he needed a break. After all my thinking and what he 発言しました to me about still liking me and he still wants to be フレンズ but he cant be in a relationship right now. Everyone I have talked to I have asked them why they would think of such a sudden break up when he mentioned he had been thinking about it for months now, and never decided to discuss it with me. I want to know if he was thinking about his future and how unhappy he has been. (his bday was about a 月 前 and his older sister tryed talking to him and telling him that he is not happy, what other jobs he could get, telling him I will be leaving