Obsessed with someone

Hi I’m William I’m 18 and I’m autistic and I have got really obsessed with someone a 41 year old I just want to ask is this normal for me to become really obsessed cause I’m really worrying that I’ve ruined my perfect freindship with her and her son I feel so awful for it i never wanted it to end like this I feel so upset about it I’m worrying for her cause social services are involved and kinda the police cause of my obsessed behaviour I feel super awful for this I’m so upset every day I’m worried so much I’m gonna be taken away can anyone please give me some tips please about this