Boyfriend, new job, good grades but no friends

easy solution: in your new job, start socialising with your new colleagues.

Hey, i was wondering if anyone is in the same position,
Im 18 and have finished my final year at college and all of my 'friends' are going to Uni and as i have decided not to, they have all lost contact with me. In school i had the best group of friends and extremely close friends i could share everything with but in year 11 i was diagnosed with cancer and all my old school friends were into partying and taking drugs every weekend and i drifted away from them as i was currently very poorly.
Then i started college and did find a new group however i knew i didnt belong and was always the second thought with parties ect.
I don't know why but since losing my school friends i have never been able to have that connection with someone and i always seem to be friends with someone who has a closer friend. But now i dont really talk to any girls, my only best friend is my boyfriend (with me since year 11) and a work friend but i have just got a promotion and will be moving stores and im affraid well lose contact.
I dont know i guess im jealous of the girls i see who see their friends all the time and share their darkest secrets. A part of me thinks friends lose interest in me as i work alot but im always the one who wanted to make plans but rhe other would always be busy.
Don't get me wrong i love my boyfriend the world and he is my bestfriend but everyone needs a best friend away from that. Im just afraid i wont be able to find new friends as im not going to uni and i know my current friends are already becoming acquaintances.. i just want someone i can call and go for a coffee with or text about the latest make up hype.
I miss having a best friend but i feel I'll never have that again.

Any advice is great,
Busybeexo