reunion of a couple after they break up

I suppose it might be 'break up to make up' for example, John and Mary experienced a break up to make up in 8 months time. Break up to make up is a healing process. but I would rather say, 'get back together' coz i have seen some English movies, that is how they express it. e.g. are you guys gonna get back together?

Translation: Chinese into English 破镜重圆 - Reunion :-)

Having read these answers I would say that if it is about a couple who a re starting their relationship again then you can use the phrasal verb 'to get back together', as Charlie said. However, if is it a a couple or family that are together again after a long or unwilling separation (e.g. work or war) then you can use the passive verb 'to be reunited'. Or you can use the noun 'a reunion' if it is a group of people seeing each other after a long period of time (e.g. school reunion), like Gary pointed out.