@theowl: It's alright. When you find yourself thinking of that person focus more on how much meaning and goodness they brought to you, as opposed to the more challenging aspects of the memories. But adjourn with this thought- both sides were good anyway and I'm grateful for this experience. It has shaped me to be the person I am today. I look forward to having fulfilling experiences of requited love.
Basically saying affirmations. I won't get too off topic but this helps to get you to shift into positive state of mind, and being. Practice it for a little and notice what comes up. Much love and peace to you 💕