So, perhaps there is economic incentive, especially if you can factor in customer relationship, up-selling and cross-selling benefits.

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Some businesses spend all the income and live the high life - this is a major contributory factor in relationship breakdown between the tenant and the business and is a recipe for disaster.

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Betty Wade, now 72, says she doesn't remember that her relationship with her daughter-in-law was tense or a factor in the couple's divorce discussion.

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