I have been with my fiance for 8 years - and it has been a difficult 8 years.  His ex wife has tried on a regular basis, to create something, lie about something - whatever - make things difficult - to just make things suck.  She's told him repeatedly he needed to dump me.  Eventually she started using her daughter as her tool, claiming I was bullying her but could never give an example (unless you call painting the kids room how she wants it, or buying her every dang personal item, and clothes, and books you thought she woudl like bullying).