Spells that i found in my yard?

I found a spell well atleast i think it is i found it on my air conditioning system: its was a candle wax wrapped like a heart with 3 pins in it with long pieces black and neon green thread with different knots in it..... i found it wrapped in velcro so that water with not get in it securely fastened on my AC unit outside... maybe its my husband ex wife who placed it..... she is greek and it looks like a greek spell ...