Linda and Lawrence's relationship

Linda and Lawrence had both been single parents for a brief period of their lives, both left alone caring for their respective children after the untimely ending of a previous marriage. They were united when they fell in love with each other in their mid-twenties.

When they were married not long afterwards, their children joined each other as step-siblings. Lawrence and his son Ferb moved to the United States to live with Linda and her children Phineas and Candace. They had since resided with each other as a single united family.