Help me please😭😭😭😭

Okay so, i was in a relacionship for 1 year and 6 months. We recently (3weeks ago) broke up because things were super bad for a while. Its still hurts me sometimes, but the point is i met someone else. He is everything i was looking for. I just dont know what to do. I dont want to hurt my ex or hurt this new guy. What should i do?Â