It seems Calvin Klein and his 21-year-old boyfriend Nick Gruber have anything but a stable relationship.
According to a source, the two are:
"On a break…They could get back together, but who knows?"
The source went on to describe them as being "on-again-off-again."
We'll have to wait and see if they get back together again or if this is finally it.
[Image via Ivan Nikolov/WENN.]