It’s as simple as Michael Savage’s ‘Liberalism is a mental disorder.’ Take if from there. Most answers about liberal ‘friends’ attitudes and responses can find root in that concept.
It’s not like the 1950’s, when Jimmy Stewart, a very prominent Conservative, and Henry Fonda, a leading Liberal, could remain close, personal friends.
It all changed in ‘72 when they adopted Alinsky’s politics of personal destruction IMHO. You can’t even have a rational conversation with these people anymore.