It's not very natural. However, after a while relationship between the spouses soured and became more aggravated and worse by each day.
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ayan86However, after a while relationship between the spouses turned bad and became more aggravated and worse by each day.That sentence is not very natural. Note also that you need "the" before "relationship."
teechrNote also that you need "the" before "relationship."Right, I missed that point.