If they'd called you 'boring' 'granny' behind your back and said 'I've realised we're very different' 'stresshead' and because you'd said something innocuous such as 'you didn't like spending all day at the beach' they'd twisted this and said 'omg, she said she doesn't like going to the beach wtf!' Then mimicked your voice in front of you in a high-pitched way.
Would you feel comfortable with this person and be able to trust them? It's the way they've acted like this rather than just speaking to your face if there is an issue. Mocking behind your back and calling you names isn't great.