Ambivalent... I have always considered this to mean that someone didn't care one way or the other about something. But as I looked up the definition, they define it "having mixed feelings about something". I suppose in a way they could be the same. If you have mixed feelings about something it could leave you not really caring one way or the other. A continual exercise of analyzing the pros and cons of your feelings could easily saying, "I just don't care that much."
I started looking this up because the verse that came to my mind today was Revelation 3:16
So, because you are lukewarm—neither hot nor cold—I am about to spit you out of my mouth.
More and more I come across people that in the name of political correctness, take a middle of the road decision. They are no longer passionate about their own personal beliefs. Jesus calls us to be passionate about his teachings. Not to stand on the politically correct words of society but to be passionate! Hot or Cold it is important to acknowledge where you are in life. Jesus example was always extremely passionate about life, the love of God, and living a reconciled life (humans and God.) Let us not tempt him to spit us out of his mouth. Let us choose to live a life that is HOT, on fire for Jesus.