Most Helpful Girl
You have Obviously found out that This horse was Not of Another color when you gave him a Second chance for romance down the manure trail.
Tell him face to face that you think it best that you both take a rest, that this is Not working for you and you just feel Friends would be the Best way to go.
It sounds like he will never be any different with him being wet behind the ears in years here, dear, and you should not have to put up with the horse and pony show anymore, close the door And... Move on out.
Good luck. xx