Have you underestimated someone? Or ever been underestimated?

When I met my love I knew it would end, like all my relationships have. But it didn't. For a long time I didn't share who I was with him because I thought he would run from me, but when I did, he didn't. I never thought anyone could love me the way I am, but he does. I never expected us to last, but we have. It's been 18 years. I love him more than ever.