If someone has a toxic relationship with you, don't try to "fix" them. Protect yourself. Love yourself. Take care of yourself. Enforce your boundaries. Minimize interaction with them. Stay away from them. Hold space for yourself. And remember your well-being > their feelings.
My first introduction to lesbianism was when I was 7 or 8.
It was with the neighbour's kids.
It first started with the normal "mummy and daddy" plays and before we knew it, we were getting under sheets and touching ourselves inappropriately.