Halloween party

I'm not in the best mindset at the moment anyway. I was invited to a fancy dress party this week and took it as I might actually be getting friends. Anyway it's my neighbours sons party. I have tried socialising again this last year and I go out to see bands at the local pub with her and her friends. I find I'm not invited I just turn up. I'm clumsy (knocked beer over one person) and never know what to say, talk about flowers alot and stim without realising but I like the bands sometimes it's not crazy busy like gigs. 

So anyway I bumped into her son and said oh I will weed your front garden this week. (I'm a gardener) he replied oh great I have the halloween party..... Are you coming? I said I didnt know what he was talking about he said ask his mum I say okay thanks. 

I asked her she said havent you been put on the Facebook group and she doesnt tell me the time. I then get added to the group which the plannings been happening for 10 weeks.

So I'm happy I'd been finally invited to something, until today I started thinking did he let slip he was having a party and felt obliged to invite me? I try so hard to make friends whys it impossible. Now I'm thinking do I go? Am I over thinking this