Why has my ex contacted my sister?

[Anonymous]

My ex and I broke up on not very good terms almost 2 months ago. We have had no contact (me in the hope that he would miss me but I'm actually moving on quite well) since we broke up. He never used his fb when we were together but since we broke up, he has added loads of friends and pictures, including ones of a stripper from a stag do. This week, he has sent my sister a message on fb just saying "hi". Was this a mistake? I have asked her to ignore it. I also need to return his things but I'm not quite ready to contact him yet, should I just text him to come pick them up?

[Aly101]

I can think of two reasons. One he wants to go out with your sister or he still likes you and getting in contact with your sister is a way of getting updates on you without asking you directly.