University of Alberta relationship researcher Matt Johnson has some Valentine's Day advice for anybody who's had rocky relations with their parents while growing up: don't let it spill over into your current romantic partnership.The love between parents and teens - however stormy or peaceful - may influence whether those children are successful in romance, even up to 15 years later, according to a new U of A study co-authored by Johnson, whose work explores the complexities of the romantic ties that bind.

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