Cliches aside, Valentine’s Day can be an occasion to reaffirm (and sometimes rethink) our romances. But those conversations are hard — and it's not always our fault! Shifting social mores, our self-sabotaging brain chemistry, and online dating can make a mess of even the healthiest relationships. Keep these wise words in mind as you talk love, breakups, and everything in between. Hear more from relationship experts like Esther Perel, Dan Savage, and Helen Fisher.