Is it just a case of mutual dislike, or did something happen that I need to know about?

A conflict between two people, most often from a mutual dislike or personality clash.

Perhaps that sort of understanding might have overcome their mutual dislike.

"I think it was from then on that our mutual dislike became incurable", he later wrote.

AS with lovers who take a while to warm up to each other, the couple's first meeting promised nothing but mutual dislike.

Her relationship with the Squad itself was one of mutual dislike.

Judging by the power of their mutual dislike before, they had to be excellent friends now.

For no reason I can think of, a mutual dislike had arisen.

After their initial mutual dislike, they develop a deep friendship.

Austin and Caldwell since share a mutual dislike for one another.