I just tell people I love them. I don't really understand the emotion myself.
What don't you understand about love?
I sometimes struggle with emotions, I'm a bit afraid of intimacy
If you don't know what love is, you haven't taken the time out to really listen to your partner's needs or wants. Communicate with your significant other and see what you can learn from each other about love.
I'm too busy to stop being a piece of shit.
If you know there are things you struggle with you should find someone to help guide you through.  Emotions are complicated but worth it.