<human>: Here's the situation. My ex (21M) and I (20F) broke up about a year ago - our relationship lasted about two years and we shared everything together. After the breakup (which was occured because he was lying to me about some pretty heavy stuff) we continued to stay in contact. At the beginning of the summer we both agreed that it would be best to just let each other go and if things were meant to be we would get back together a few years down the road. Recently I've started dating a new guy (24M) and I really like him. Me and my ex have not had contact except for once when he called me saying he missed me and that he was optimistic about our future if he could figure things out in his own life. I did not mention the new guy I was seeing because it was so fresh at the time but I also did not express any continued feelings for him either. I simply wished him well and hoped his life would get back on track (we broke up due to his drug problems). At the end of the conversation he asked if I could call him sometime just to check up. I have not called him but part of me feels guilty just cutting him out of my life completely but I also feel wrong because he is now my ex and his issues are no longer mine and the new guy deserves my full attention.

Sorry for the long story but I feel really torn up. How do I keep everyone happy?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Broke up with ex one year ago due to drug use, continued contact until recently, I met someone new and feel guilty about talking to my ex.