I’ve met someone and they started faking tics after seeing mine

The mutual friend I’ve spoken to tells me they’ve never mentioned them before and the “tics” they are doing look so fake it’s obvious and I just wanna punch them. I can’t control my tics very well, I’m diagnosed by a professional, and they just decided one day that she wants tics. They’re also claiming polyfragmented DID , EDS and pots (after I mentioned I have it) needing a wheelchair (again something I mentioned) but walked around fine when we went out and claims their GP won’t treat them and family don’t believe them and it’s taking everything in me to not tell them to stfu, and Because ik they’re faking some of it it makes it hard to believe anything they say, like they might have autism and ADHD but how am I meant to know they’re not faking that too to “fit in” I just don’t want to know them but they’re friends with my friend dispite me warning my friend about their behaviour and competitiveness with disabilities