Quite a few for me.
Started liking Cristian, then he started irritating me. Then liked him again, and now it's meh...
Didn't like Nick, then liked Nick. Then didn't like Nick. Now like him again.
Never liked Harry.
Liked Jack, didn't like Jack. Now like him again.
Didn't like Marc. Liked Marc. Now, don't like him.
Didn't like Joel, then liked him. Now can't stand him.
Liked Chloe, didn't like Chloe, now she is okay.
And so on and so on and etc, etc.