If you love someone because they love you, that is empathy. If you love someone for their beauty, that is attraction. If you love someone for what they offer, that is interest.
If you love someone for their kindness, that is admiration. But when you cannot fully explain why you love them, only that your heart does, that is love.
I highly recommend being friends with ambitious people. Their drive pushes you to also work hard for yourself. They inspire you to do better, be better. Their good traits rub off on you. You start to want better for yourself and you grow.