Search Results: close friends animals

So as some background, they came on super strong saying things like they love you VERY quickly, in about a day of knowing each other, they tell you in person that they've stared at one of the pictures on your social media for 30 minutes, they act flakey despite inviting you to events, they end up flaking on their own inviitation or text you last minute to try to confirm when they didn't make any confirmation in the past. You then stop talking to them, but you notice this on your social media feed:

They change their profile picture so it's like yours
If you like a few posts about something (say a movie, band, etc.) a few days later they like the movie/band/etc.
If you like something about animals, they like something about animals within a few hours later.
If you like a topic or debate, they start showing interest in that topic or debate.
If you like things about art, they start liking lots of things about art, or if you like things about museums, they start liking lots of things about museusm.
If you show interest in an event then within an hour they're suddenly interested in it now too.
If you post on someone else's wall, they'll like your post but not other people's who they are more close with.
Their friends start being nicer to you (on-off)

Would you consider their behavior normal, strange, creepy, or something else?