Unless your guy is joining the Peace Corps and headed to Ghana for the next five years, it probably means one of two things:
1. He wants to play the field, but he's calling it a break instead of a breakup in case no one else will touch him and he needs to come back to you.
If you're okay with being a fallback, fine. He loses points in my book, though, for not being forthcoming about his motives. "Taking a break" suggests that you've done something to turn him off, and if his only wish is to see other people, he shouldn't make it seem like it's your fault.
2. He's breaking up with you but trying to let you down easily.
This might be admirable if it didn't include an implied promise that you still have a future together when he knows you don't. Again, points off for dishonesty despite good intentions.
Guys who are crazy about their girlfriends will not ask for, or even think about, taking a break. Did you stop three bites into your Thanksgiving meal and say, "This is great but I think I'll take a break from it?" Yeah, neither did I. We gobbled that shit up.
He owes you an honest explanation. I'd ask him for one.