Love is a warm feeling. Just because you spent much time with eachother or know eachother well doesn't necessarily mean that you should be in love with them...
Love is the same thing with kindness, with honesty, with your ability to care about people or someone.
Don't focus on the way people abuse the love you have for them, Focus on the fact that you have love within and being good makes you who you are, it makes you a good person, with a beautiful and kind soul.