Depends on how physical this "companionship" gets. A little grappling never hurt nobody but once you throw in some action from the top rope its game over boyo.
Less concerned on the "gay or not" debate, but only days? You only managed to make it to several days? That was the best you could do?
I knew one guy who couldn't go 24 hours without rubbing one out. We didn't find out until 21 hours in a surveillance job when he suddenly got up, went to the corner, and made noises similar to mixing Kraft mac and cheese. At first we thought he was just pissing or something but then realized with horror when it went on over a minute. The problem was, he was the only guy we had access to who knew how to tune our equipment. Easily the gayest month I ever had to endure. Never again. I didn't have danbooru back then to cleanse myself with moe after the fact either.
Me and my little brother share the same room, and he not even go to the toilet or wait until I'm not there to do it, just go at it whenever I'm not looking, but I still see it at the edge of my vision. And he'll stop and cover up when I stand up from my desk, then resume when I look away.
Not really willing to discuss this with him though, he control my house's Internet
