It was my first job, I needed to move on, but I was hesitant because they trained me me and trusted me when I was just out of college. I told my boss I needed something else but was hesitant when he dropped this gem of wisdom : “[company I worked for] is just a company, you don’t owe them anything, if you want to leave, just do it”
You do not owe your company a thing : they train you for their benefit, they pay you because you make them more money, they are nice to you because it’s costly to find and train people.
If you need to move on, move on. Keep in touch with the people you like, and if they blame you for leaving they aren’t worth the effort .