Bill went over to the neighbors' to play horseshoes the other night so I saddled up and went for a ride by myself (with the dogs of course).  It was hot, sure, but less so the later it got, and all we did was walk with a little trotting.  I enjoyed it, Deva enjoyed it, the dogs enjoyed it.  It is a good thing to ride alone sometimes, good for the horse's attitude and good for mine. 
ALl is good, right?