I was using the desktop version on Opera on an Android tablet at that time. I've never accidentally opened links while scrolling before, so I highly doubt that

I was using the desktop version on Opera on an Android tablet at that time. I've never accidentally opened links while scrolling before, so I highly doubt that is what caused it. Even so, how would that cause me to "like" it, but not "follow" it (which is a default function of "liking" a page)?