Meltpot
A melter, someone who stresses continuously or overthinks situations. They make you feel like your brain is melting just because of the stress and anxiety they create. It is not a compliment. If you’re being a meltpot, then you know that you deserve to be called a meltpot.
Sally broke up with Peter, but she’s being a complete meltpot now that he’s started seeing Anna. She’s watching his WhatsApp status and hanging round the coffee shop he goes to. She needs to move on.