A leech
For those of you who do not know what a leech is, here is a prime example of the human version of the bloodsucking creature. They latch on to other animals and suck the blood out of their body as nutrients for themselves. Be careful, because they are everywhere you least expect them to be.
This person had to find out from friends around them that they had a leech problem they needed to deal with right away. Her so-called friend was using all of her online accounts and eating all of her food each time she came over. Looks like this leech was finally removed.