I have two Exes who I dream about occasionally, one of them maybe three times a year, the other roughly twice a year. All other exes pop up every couple of years losers 
Last night I dreamt about both of them in the same dream! It was quite pleasant (they were both nice, not horrible) but I always feel a bit odd waking up beside DH having dreamt about ex boyfriends. Dreaming about a stranger feels less guilty somehow.
Do you ever dream about an ex? And is it nice if you do? I'm just being nosey really 