I'm very very mad

My friend met someone online and that person always comforted them and when they told that person abt us (we've been friends since grade 2) that person got jealous and told them to stop talking to us but they loves us very very much so they said no but then that person started replying to their messages with a "kk" or a "" so my friend just stopped texting them
Eventually they argued and that person said that my friend was being toxic and manipulative and that my friend was victimizing themself (sure, lie to yourself all you want honey