OK. Let's stop saying that the opposite of fear is love. Instead, let's think this through a little bit.
If you fear something, what are the sentences you would use to describe how you feel? Most likely, something like this:
"I'm afraid because I don't know if they will like me."
"I'm scared because I've never done that before and I don't know what will happen."
"I have some fear because I'm not sure I can handle that situation."
Do you see a common idea? Fear is not knowing what will happen or how we will be able to respond.
I believe that the opposite of fear is confidence. And confidence is having a sense of empowerment. See how these statements feel:
"I'm not afraid because I know that, generally speaking, people like me."
"I'm not scared because I've done things similar to that and, even though I don't know exactly what will happen, I'm sure I will be ok."
"I don't feel any fear because I'm sure I can handle that situation."
Does this make sense? We don't always feel fear when there is an unknown. If we feel confident that we can handle the situation, then we go forward into the unknown without fear.
How do we feel confident we can handle the situation? By having had similar experiences where we responded capably. And (this is very important) by reminding ourselves through self-talk that we handled those similar situations.
If we don't remind ourselves of our successes, then we will forget them, and we will not feel confident to trudge into the unknown.
So, while saying "love is the opposite of fear" gives us a nice warm buzz, think it through and see that confidence to handle the unknown is the opposite of fear.