Taking a break

My boyfriend and I decided today that we're going to take a break because he is very stressed about finals and the end of the semester. It's really been taking a toll on the relationship, and we're hoping this will help us get back to normal. He says his feelings haven't changed, and he won't do anything with anyone else, but I'm so scared that he's going to find someone better. I'm just curious if taking a break has actually worked for anyone else and if you both came back stronger from it? What should I expect?