In a single word, I would say chillin'. You seem like a really laid-back, open-minded, and creative person. Going off my intuition, I would say you don't really worry too much about what other people think, and just do your own thing.
He is one with a very complex mind, a deep thinker of sorts. This can make him seem a bit stand-offish to newcomers, despite the fact that he always means well. he seems to always have a strong opinion on almost every issue, and he often enjoys listening to clashing view points and debating the said topic.
Mind aside, he is fiercely loyal to his friends, and often considered one of the 'defenders' within his circle.
I would think she's pretty reserved to at least new people. Light conversation, a bit uptight about what she talks about (personal references and other such things) but over-all enjoyable. Not awkward at all~