Gumede...
yinkinga lena.... since these ppl are adults i think they should be left alone because they know that they are related. the more ppl get involved in their relationship, the more they will be defensive and try by all means to protect their marriage.
What they are doing does not sound right but i don't want to judge.
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“The truth which makes man free, is for most part,
the truth, which men prefer not to hear.” - AmaHlubi