I believe in love. I also believe that there is a huge difference between loving someone and being in love. Love is an action, not a feeling. The choices that you make every day (both large and small) show whether or not you really love that person. I know that I love my bf, not just because he makes me feel good but because I work to show him my love and he does the same.
I know that love can last because I see it in both sets of my gradparents, who have been married for over 50 years. I see it in my grandpa's new marriage (my nana died a few months after their 50th anniversary), how the love is different but no less real. I see it in when my other papa indulges my nana's wild ideas (and they can be wild)! I see it couples all around me, in how they put in the time and work to make sure that their love continues to grow and thrive. And they are individually and collectively better people for it.