I'm currently the proud owner of Frost the horse. What I want to know is, what will happen to him if I ride another horse?
Obviously nothing will happen as long as I have him in sight, e.g. I'll be able to ride Frost to make him my horse again.
But what will happen if, before I get back on Frost, I fast travel somewhere? Will he return to where I originally stole him, will he disappear forever, or can I own two horses simultaneously?
If he goes back to where I originally stole him, will I have to steal him again, and therefore never be his true owner again?
The reason I'm asking is because I want to get Shadowmere (the Dark Brotherhood horse) while keeping Frost. Is it possible to do this, or will riding Shadowmere make me lose Frost forever?