“Love is putting someone else’s needs before yours.” —Olaf, Frozen
When your first thoughts are instantly about them instead of yourself, that is an indication.
When your focus is how to make things easier for them, and you will go out of your way to ease their burdens even when it requires more effort from yourself, that is a sign.
When you make their favorite foods instead of what you desire.
When you give them the best of you.
That is love.