Daily December #1: OTPs & Me

endeni asked: What makes a couple an OTP for me? In terms of chemistry, how they treat each other, what makes a couple stand out from a regular relationship?

I don't usually think about this sort of stuff—I just start reading and look up months later to realize I have 103 bookmarks* for the same couple. So, I'm kind of working this out as I type… ( ...and I rambled a bit, which is hardly a surprise )