Yes and yes sometimes. The biggest thing that I learned about this when I first starting saying "I love you" to her is that I couldn't expect the same response/any response. It can hurt a lot to say an unrequited I love you. My T does occasionally say I love you to me, but perhaps 1 out of every 2-3 times that I say it to her. And I do genuinely love her - we've worked together 2x/year for 3 years and have been through a lot together. She has given me more of herself than perhaps any person I've ever known and all that she gives is healthy and safe. I guess I don't think of it as a weird feeling anymore; it's natural and beautiful.

Added to clarify: My love (or hers) isn't a sexual/romantic love.