Your a good person, cute and kind... even if you are a cat.
Selfmate is just a selfmate. Don't let him get to you. I don't think he actually intends to be outright negative. In the grand scheme of things it's you who decides how he effects you and your posts. One of best things my tiny old panda brain ever learned was how to smile and nod. Don't let the negative influence you. Just be the happy person we know.
Also, why are your DM's closed. Do you have any idea how hard it is to say nice things where everyone can read them. My rep will definitely take a hit for this but I guess your worth it.