A relationship that needs a constant feed of verbal interaction to survive is an empty and horrible thing. You should be able to have comfortable silences together just as much as comfortable conversations. To be able to casually just shut the fuck up together for extended periods of time and still feel good about your relationship is an excellent sign you have a mutual understanding for this thing called love.
In the meantime, just fuck and do whatever else is enjoyable together. But do things together, do things you like to do and bring her along, feel the urge to share your interests with her. If she loves you she should have no problem to love what you like to do. Unless it's something really fucked up and you need to die for it.
Eventually you will feel natural about both talking and not talking and will only talk when you have something you wanna say, and that will totally be alright. It's ok to be boring imo, it's ok to just sit and watch eachother, it's ok to dishwash together without fucking orating, it's ok to start up sex without asking for permission, it's ok to not try so hard about the casual and irrelevant things in life. Stop caring about shit; grow sanity.