Today I locked my keys I'm my car at work and, my co-worker was going to help me but my ex (we work together) insisted he'd help me (he told my co-worker not me). So i let him and sure enough he got them out. He also advised that my tire looked low and to be careful. Then he asked how I was doing and told me how he has an interview with another company sometime next week etc. I wished him luck. My question is would you be overly friendly to an ex even do them favors that require... patience and effort without wanting something in return? Thanks.