Confused Relationship help

Okay so I have a problem. Let’s call him S. S and I have been dating since 03/16 all we did was fight and break up over the course of two years. I moved only 29 mins away 03/18 and I have not seen him since. We texted a little and fell off and now we just argue when he texts me I ignore. Well know I think there’s a new guy in my future, let’s call him G. I’m nervous to get together with G, I went to school with G but never saw it spoke to him, he much older than me. 6 years older. While S was 3 years older than me. My friend knows G. I’m just nervous to meet new people cause I always think they have bad intentions. I’m always thinking of S. He was my first boyfriend. I just think that I’m betraying him. I only want to be with S because he’s familiar and safe (for the most part anyway. If I don’t make him mad I’m safe) but G who knows? I don’t if I should move from S. I want to try things with G but I’m scared. I’ve been texting G. Help! Any advice??