I feel in part it's me because I've taken in a few guys MUCH bigger than he is before with little to no problems. One of them being a bit Tumblr-famous with a little over 8" whereas this guy is a solid 7 or so and we just couldn't proceed.
As for the toys how do I go about even getting myself comfortable enough for it? I know as of right now I have a very small length/width I can fit in my hole. I also usually hate the feeling of any foreign object other than a dick going back there.
More length is often much easier to take than girth. But once again maybe the bigger guy knew what he was doing so made the process easier.
In regards to toys, probably best to start with fingers. You want to gradually increase the length and girth as you go. You could then try an anal training kit of butt plugs of increasing girth. Next would be 2 or 3 dildoes of increasing girth and length. You may find a double ended dildo better as the biggest option because for some reason the longer dildoes also tend to get overly girthy. Just stick to toys under 6 inch circumference/1.9 inch diameter. Avoid heavily textured or rigid toys.
Not sure what you mean by hating foreign objects in your butt. Can you give an example?