After much research on the internet, It appears at the time of writing, Mousa Dembele has made a conscious effort not to reveal who his girlfriend or wife (that is if he is already married).
Ngemuva kocwaningo oluningi kwi-intanethi, Kubonakala ngesikhathi sokubhala, uMousa Dembele wenze umzamo oqinile wokungazivezi ukuthi ngubani intombi yakhe noma unkosikazi wakhe (okusho ukuthi uma eseshadile).