1. Unfortunately there are parents who are vicariously trying to live their life through their children. Parents who fit into this category are in no way shape and form looking for what is best for their child.
2. The Shulchan Aruch states that one does not need to listen to their parents when mum or dad say not to marry someone.
That is not to say that mum or dad are automatically wrong, nor is that to say one should not try to see where they are coming from, and if perhaps they are correct here. Just trying to say that this is not a violation of kibud av v’em