The Relationship Type?

I don't think I'm the relationship type.  He calls me his girlfriend and that makes me feel awkward.  He refers to himself as my boyfriend and that also makes me feel awkward.  When I spend too much time with him, I can't wait to go home and spend some quality time by myself.  To be fair, I do this with other people too; I am not what most would consider an extrovert.

So, this leads me to a question, could I ever be happily married to anyone?  I'd see him (any him, not specifically this him) everyday, for years and years.