Love was much married but the wife in question, Suzanne Belcher, was married to him in the right time period although a divorce was not filed for until April 1969. That seems to be a delayed reaction to his allegation that Susan Atkins broke up his marriage by virtue of babysitting his children at Suzanne's behest while she was having an affair with his cousin Dennis. Also, there is the little matter of Susan being ensconced in the Mendocino County jail for most of the time that the Family spent at Dennis Wilson's home. I'm not certain of how much time Susan would have been at Dennis's house but I'm guessing it was not for long and quite early in the encampment.
Mike Love has many children by his six-pack of wives. There was one child, a daughter Shawn Love, that he did not acknowledge for many years, who the result of an affair he had while he was married to Suzanne. Shawn Love ended up marrying her father's cousin, Dennis Wilson.