Well, first of all you have to have that strong connection or bond, that both of you have, for each other, that makes that person more important to you than anyone else on the planet.
DP is my best friend, and I am his. This is genuine, from both of us, you couldn't fake it.
Both of us prefer each other's company to anyone else's, both of us prefer to do things together, and like being with each other.
We both talk all the time, and really care for each other. I wouldn't ever want to deliberately hurt him (so would never say hurtful things to him) and would be very upset if we accidentally hurt the other. We treat each other very well, we don't have silly little arguments, we have never called each other names =, and that is not something we have to try not to do, it just would not occur because of how we feel about the other pseron.
We have a lot of fun together, laugh often, value each other and also value ourselves. How could we not show each other espect when we feel like this?
We believe love is an action, not just a feeling.