Political friendship doesn't last forever?

Isn't it amazing how readily Conservative MPs and reps now join in accusations against their former colleagues? The readiness and vigor with which they do it makes one wonder how far (or how high) the string of similar (alleged) behavior really goes. Importantly, it can go both ways, of course - the energy can be a sign of complicity or a sign of sincere (?) shock at the wrongdoings of others. Which one is it?..