Starting Issues

[nbstarpup]

For about a week my car was starting week and than I let it sit from Friday to Sunday and than it would not start. I jump started it drove it around and than it would not start monday morning. jump started it again drove to autozone and the battery tested good go I thought I was going to need a jump start but no the car acted as normal for 3 days as if nothing happen. This morning it did not start? jump started drove to work and than let it sit for 20 mins and tried to start it again and it turned on fine. I was reading that it could be potentially leaked to the crankshaft sensor? Anyone have any ideas or does it sound like U'm headed to the Stealer?