I love you, but I hate your overeating" doesn’t help a marriage. It's not helpful because hatred is a powerful emotion (a posture, really) that is not easy to wield or maintain carefully. Hatred is more a bludgeon than a scalpel. Our ability to distinguish sin from sinner, especially in others, is so limited, so vulnerable to our own unexamined subjectivity.
Virtually every church tradition, by theology, interpretive strategies, or pastoral practice, makes accommodations for divorced people who seek to remarry. These accommodations permit divorced people to enter unions that are outside the rule laid down in the Bible. But we can't have it both ways. We can't apply a strict "biblical marriage" rule to gay people and not apply it to those who are divorced and remarried.