oh yey there are others out there with the same problem as me!!
my 17yo tb gelding is terribly attached to my 10yo tb mare, if i ride her out, he runs the fence line constantly, calling out until he's in a complete lather, and according to the OH he doesnt settle AT ALL until i come back.
If if ride him out (she couldnt care less) he prances and jigjogs for about the first 15-20 minutes until he realizes he aint going back until i'm ready and then reluctantly will settle down.
however when we go to arc i cant pen him next to my friends mare cause he instantly attaches to her and then if we are in the same class and she gets ahead of me on the xc course he goes nutso trying to catch up.........EXTREMELY FRUSTRATING and dangerous cause he just stops thinking and just wants to get to her.
even when the farrier comes if i take my mare out of sight to get her feet done, he goes stupid, if he cant see her his whole world collapses!!
i was seriously thinking of moving him on because of this but i just dont have the heart to do it, in all other aspects he's a really nice horse......apart from getting a third horse, which i dont really want to do, i'm of the mind that well he'll just have to deal with it and seperate him from other horses at adult riders and see if that helps.
but yes very very frustrating to have a co-dependant horse.