One thing I think you will notice is season 1 Darren is a little more into her not wanting to use her powers than later seasons. By then he has basically all but accepted she is going to use her powers and is at most kind of frustrated but even then lot of is playful frustration. I noticed that he even gets along pretty well with most of her family except Endora but of course that is part of the jokes. Not being able to get along with the in-laws.