Bf's ex!!!!

So my bf soon to be father to my unborn child .. Has this ex girlfriend that just won't get the damn point to move the fck on. They haven't been together for 4 years. She found out we're having a baby and now she wants him back in her life. Oh yes for got to mention she claims her son is his but he Denys it to everyone. So who knows. Although the boy doesn't look anything like my bf. She keeps chasing after my bf. She goes where he works like a stalker. She gave him her new number sayin to calling for an emergency with the kid. Happen to be no emergency. I found out what was going on and she still Deosnt get the point to move on we are having a baby ,. We live together. Like stop trying to be his booty call it side chick already. It's truly sad how bad she is still after him.