This.
Sometimes
my girlfriend and I don't say much to each other for days. Off in our own rooms doing our own things, only coming together to eat dinner and watch some TV in the evening for a couple hours. Of course we do things together and snuggle and laugh and there are times where we're nearly inseparable too, but....we're
somewhat quiet people who both
usually like to hang at home and know how to give each other the large amounts of alone time/space we both need.

Just needed a few words added in and you have how my girlfriend and I have been for the last two years.
Am I about due for the "marriage pressures" from people to start popping up? I am only twenty-two and have been getting a few blips on my radar already.

Crap...I think I answered my own question...
At OP, just gotta find the right kind of girl for your personality. http://themotivationalposters.com/wp-content/uploads/2012/03/twisted-prycho-btches-motivational-poster-461.jpg Oh I am bad...I even found one with typos!!!
Just look for personality first then looks and all the rest and you should be fine.