I don't know the ins and outs of your relationship, but I've been in a similar LDR circumstance and it ended in heartbreak.

Now this is just my experience, but this sort of thing led to a three year on and off thing with my ex. Probably four times she ended up leaving the relationship telling me that she needed someone there with her, only to come back months later.

LDRs are really hard, and only work with really good communication and a solid plan to be in the same place together. Just don't go down the road I did. Ask yourself this: if you take a break, and he decides to come back, will you be able to stop yourself from fearing that this same thing will happen again?