Lost understanding of a dream

I am walking along a country road, mostly dirt, with an old boyfriend (Aaron) and one of my close friends (Caroline). Aaron and I are each leading a horse, they are big, beautiful brown horses, with white on their foreheads. Caroline is just walking with us. I feel so happy and proud of 'our' new horses, I am smiling, the dream feels so real - the grass is a deep green, the air is crisp, like on a perfect spring day, the trees are blowing slightly in the breeze. I turn to Aaron and tell him I am going to get on my horse and ride home or to the barn, I'm not sure where we are going, and he says 'no, you can't - you will get hurt', I try to tell him that I know how to ride a horse (which I do), and he still tells me no and takes the reighns from me. I feel so angry at him, I don't understand WHY I can't ride the horse, I feel like yelling, then I wake up.

I have not talked to Aaron in 9 yrs. Caroline and I talk weekly. I am still wondering what the horses stand for, and why won't Aaron let me ride one? I feel that this dream has some meaning in it - good or bad - I feel there is something deeper I am supposed to see here.