Aww, nice thread.
When they bring out the best in you.
When they are always in your future plans.
When you feel like you can be your true self - goofy, lazy, insecure - whatever, you're just you with them.
When their smile makes you melt.
When seeing them sad makes you hurt. (OK, that happens A LOT with us NF's, but y'know...)
When you feel the most safe in their arms.
When you could just cuddle with them forever more.
Eventhough they don't always understand your deep/abstractness, they still try, and that's good enough.
When you're proud of them, and you want to make them proud of you.
When you link almost everything you love to them.
When their scent makes you feel at home.
When they're your best friend as well as your lover.
When nobody else's opinion of them matter.
When other people's opinion of you matters less.
When you look forward to them coming home from work, every day.
When you're two Introverts, but you love being together every day.
OK, I'll stop there.