D.M.
Hello M., first of all, have you sat down and had a long talk with his teacher?? that is what I would do first because he might really be having some problems with other kids (boys) in his class, my child did at one time! Make sure his teacher is aware of everything going on in your son's life...all about his Dad! Do you have a brother or a male figure that can sorta fill in for his Dad for a while? It might help him to talk to another guy about what all is going on in his little life that has him so upset!! It might not have anything to do with his Daddy so that is what I would do as soon as I could get a guy I trusted to come take your son out for something so they can talk!!! if none of this works then yes try therapy but I really think the older guy thing will work the best and of course talking to his teacher!! Please keep me informed! I wish you lots of good luck! D.
PS does he have anybody around home that he plays with? that might be another problem if he doesn't because that means it is just you and him until he goes to school!!