[QUOTE=sascha;7775577]
Mmmmmm, pancakes.
Right horse, I couldn’t disagree more strongly. I think it’s actually more of a pack behaviour thing. Everyone feels they need to have the exact same experience so they smack a tag on it and become part of the team.
Besides, it’s a silly use of the word heart. Would we ever describe another human as a heart something? Nah. We describe them as what they are (sister, husband, uncle) and then add descriptives as necessary. Favourite sister, friend who is like a sister, asshole son in law, 2nd husband, etc. 
<-- these things are awesome, and have come to be part of internet language, but they are not words.
And nope, not trying to convince anyone, just presenting another point of view. It’s not likely to fall off CoTH any time soon, no matter how much it makes some of us cringe.[/QUOTE]
I’m ok with disagreeing…
but really, it has NOTHING to do with pack mentality. When I bought my horse I’d been away from the horse world for so long I didn’t have any clue it was used, not used, etc. I wasn’t joining any pack.
And while I hope that everyone has a wonderful experience with her/his horse, I don’t feel that everyone has to have the same experience as I do in order to have fun…
And we do actually have a similar term when describing a partner: “soul mate.” And before “BFF” became so popular, we had “best friend.”
It doesn’t matter to me, not arguing with you, truly, just explaining the words/verbal part of it because you asked and I’m assuming it wasn’t a rhetorical question - perhaps it was. But it’s trying to convey a feeling with a word. Like “love.” Or “right.” Or any number of words that might not translate well. I can’t remember some of them, but back in the day I spoke some German. Those words were pretty cool, and they conveyed some things that didn’t translate. I think there is a dressage term…perhaps someone will remember it.