As Chris Bryant states the glue will not break. ABS glue is also incredible easy to work with. Just coat both surfaces and stick them together with a slight twist. Be quick though as ABS glue is a lot like super glue in that is cures fast.
You coat both pieces with glue and have a few seconds to carefully position the parts near each other. But once the parts touch you only have about a second or two to give them a slight twist to spread the glue and then it's solid.
Here's an example of the coupler Chris was referring to.
Link