So, to further help you understand and categorize the moments with your partners that make you feel warm and fuzzy, here are some white flags for you to look for.
Sitting on the couch together and not feeling obliged to cuddle
There's nothing wrong with cuddling -- but there's also nothing wrong NOT cuddling. When you've made the commitment of being, well, committed, you don't need to constantly smother each other with physical affection, because the true connection is -- wait for it -- in your brain.
Borrowing each other's clothes, regardless of gender norms and size
She looks terrible in your oversized black hoodie, you look ridiculous wearing her fleece beanie, but who the hell cares. When you can throw caution to the wind and re-appropriate each other's outfits for your own personal gain without a care in the world -- or taking issue with how they look -- then that's a win.