I am the same way about things I am interested in while I am doing them. Fortunately, I now live alone.
Unfortunately, I have had a few accidents on the way to the bathroom because I was engrossed in what I was doing online. This indicates at least some level of obsession to me. Ya think:?: I will also postpone meals for way too long when so engrossed. Occasionally, though I will head into my inbox, and check my family emails. My relatives sometimes send me links to videos that take a very long time to down load with my dial-up connection. So I will sometimes start one of these down loading, and then go use the facilities, or eat, or both.
Occasionally, I will bring food in here to eat by the PC, but I don't really like to do that. I don't want to mess up the place, and I prefer to eat at the kitchen table.
As for not wanting anything much to do with other people, well I am a hermit type, and have told relatives that umptillion times already, so what do they expect? I do try to be civil with people when I have to have dealings with them, but I don't know what else to suggest you do. If I did I would be able to do it, too. 
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If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau