Wondering if my ex is bipolar, on drugs or just irresponsible. Not sure how to deal with this.?

CC,You sound exactly like what I went through 13 years ago. Girl believe me I know how frustrated the you are feeling and will tell you this he is self centered,only out for himself and his selfish needs.Ignore him and do what that you feel that you need to do in order for you and your son as well as your education.He is only focused on his selfishness and has no respect nor regards for you or your son.Hope that I have helped you and good luck to you and your son,you are apparently in this alone and remember I do care and hope that I have helped in some way. It took me years to come to terms with my selfish ex. Whatever that you decide please for you as well as your son's future. It is apparent that your ex is a deadbeat. Good luck and God bless you and your son.