Thanks for the congrats! I am so excited and thrilled for them. They will be terrific parents, for sure.
Re: your ex, the Drama King - history just always repeats itself with people who are jerks. People who speak badly about and lie about their exes will do it to the next one, every time.
One of my golden rules when I was dating: I refused to get involved with anyone who seriously bad-mouthed an ex. Those types were just never worth the aggravation.
Sorry you're going through this with him. If the girl really IS his daughter, hope the judge awards child support. Wonder if there are any other little ones out there related to him!