(First of all, English isn't my first language)
I don't know how to let down a guy. I'm scared of hurting his feelings and I'm also scared of losing him as a friend because I have no other friends.
I met him at my last job a year ago. He told me a couple of months ago that he has a crush on me and I then told him I only want to be friends and that I have no romantic feelings for him, which he said he was OK with. But about 2 weeks ago we started to cuddle, hug, kiss. Yesterday it became sexual because I can't say no easily

. However, I don't like sex and kissing at all, and I don't want a boyfriend. I told him a few days ago I don't want a boyfriend, then he said 'you can say what you want, but to me you are my girlfriend'. He makes plans about us going on summer vacation, introducing me to his family and friends, sharing his bed with me for the next 40 years, he wants to clear some wardrobes in his bedroom for me to bring some stuff. He's taking it too far all of a sudden. I know I should have broken it off earlier but it's kind of nice to have someone to hug and cuddle, and I don't have any friends, and at the moment I have no job so I'm very lonely and stressed.
I'm scared of talking to him about not wanting a relationship and sex.
re-read the post, the only reason she hasn't ended this already is because she wants a hug and a cuddle, what she is doing is so wrong.