Why does she do this to me?

we were together off and on for 3 years and she left me in that period a total of 4 or 5 times but never longer than a month to run off and have her fling....well after the last time she ended up marrying the guy ....the marriage was in its second week when she again attempted to contact me and we ended up back in the sack for around 3 months together and she left again back to him citing that she doesnt want me....she knows i took the main breakup harder than anything...but here it is nearly 3 months later with absolutely no contact and out of the blue she sends a message asking about property i had told her 10 post breakup that i didnt have....why is she still sending me messages? i think she just wants to see if i will proposition her...she has no reason to send me anything...i havent said 1 word texted 1 word or contacted her in any way in 3 months....though she has asked me 2 months ago that when i move out of state to take her with me...i ignored it....then never got another message until yesterday asking about that property that i dont have and have told her 10 times previously that i dont have it....why wont she just leave me alone and let me live my life