I Need Advice

In December, I watched you leave to fulfill your military duties. You told me this isn't goodbye, just a see you later. I was sobbing beyond belief and you told me that it'll be best for me to not be caught up with you. Here it is over 9 months later, I'm with someone else and we are in love and planning our lives together. You talk to me every so often throughout those months. I feel more deeply for you than ever before each time. Now you're telling me you're coming back home for a few months and want to pick things up where we left off. I don't want to ruin what I have for something that will not be permanent. I love you both... but