Bestfriend is jealous with relationship?

The relationship with the special someone is not new but ever since I got multiple jobs, my bestfriend complained to another common friend that I had "no time" and blamed it on the new relationship saying my SO is an attention seeker. I admit I said no multiple times to the bestfriend's invites but it was because I had a hard time adjusting to my new role. He took offense because when we are together, i hardly listen to him or act as if he was not there. I was actually working when he invited me so I still went but at the same time focusing at work online. Now, whatever I do irritates him. It feels as if he is willing to cut off the friendship. Meantime, i feel like i need to justify every behavior to him. Because he also said I was always on the phone texting. I feel hurt he is willing to do this over something so trivial as having no time. He didn't even tell me and concealed that he was hurt. He just began to be aloof and a bit condescending with his remarks. I'm not willing to break off the friendship but I'm hoping that he'll realize how wrong he is. How do i try to pacify him? It's not easy as just giving time. He declines invitations from me now. He is gay so we are not interested with each other romantically.

Bestfriend is jealous with relationship?
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