Hi again guys

How does everyone deal with their specific person being in a relationship with someone else? I have strong feelings for my person. I can't get rid of this desire no matter how hard I try. I've been feeling great and focusing on other things. I have so a lot of self love, but my reality isn't changing. How do I deal with this circumstance that keeps showing itself to me?

Thanks in advance & dont and worry about being mean. I'd rather hear the truth