You've been together for quite some time now and there's really not much he wouldn't do for you -- or around you.
When it comes to certain things, the two of you are completely comfortable with each other that you don't even second guess it anymore. You know each other inside and out, sometimes you even think you may know each other way too much -- but you wouldn't trade your relationship for the world. Being shy around him is a feeling you haven't felt in ages and honestly, you're cool with that. You have absolutely no problem lounging around in your bra and a pair of shorts because you've both become accustom to this way of life.
From him farting on the couch and blaming it on the dog to you begging him to run to the store to pick you up some sanitary napkins -- nothing is too much. If you're familiar with this kind of relationship, than get even more comfortable and reminisce on these four things your boyfriend does to show you he's comfortable around you.