It's okay to have a relationship break?

My bf and I are in a long distance relationship, been going out since the beginning of May this year and have been having these arguments or intense discussion about issues that we make of everything we do practically. Its like our feelings have gotten so strong that we worry so much about one another and its at a point in our relationship that we become super jealous at times. theirs concern, worry and doubt each others trust for ourselves but there's no loyalty issues or cheating and stuff. We just fight a lot online ( this only happens over fb too -.-) and make every little thing into a big issue. sigh. Well he said we should go on a break for a while to get everything in order I guess. he says he still loves me and cares for me a lot so its not like hes actually breaking up or something. But do these breaks work and benefit and how long are they usually? help!!