  For non-negative integers~$k$, we consider graphs in which every vertex has
exactly $k$ vertices at distance~$2$, i.e., graphs whose distance-$2$ graphs
are $k$-regular. We call such graphs $k$-metamour-regular motivated by the
terminology in polyamory.
  While constructing $k$-metamour-regular graphs is relatively easy -- we
provide a generic construction for arbitrary~$k$ -- finding all such graphs is
much more challenging. We show that only $k$-metamour-regular graphs with a
certain property cannot be built with this construction. Moreover, we derive a
complete characterization of $k$-metamour-regular graphs for each $k=0$, $k=1$
and $k=2$. In particular, a connected graph with~$n$ vertices is
$2$-metamour-regular if and only if $n\ge5$ and the graph is a join of
complements of cycles (equivalently every vertex has degree~$n-3$), a cycle, or
one of $17$ exceptional graphs with $n\le8$. Moreover, a characterization of
graphs in which every vertex has at most one metamour is acquired. Each
characterization is accompanied by an investigation of the corresponding
counting sequence of unlabeled graphs.
