How to reject guys???

I wasn’t sure where to post this but this seems the closest fit. (Also kinda long story)

So there’s this guy (let’s just call him Dan) works in the same strip mall as I do. He came in one time while I was working and we just talked for probably 20 minutes about random stuff. (This was about 5 months ago) I could tell he was really socially awkward but so am I and it was kinda charming in a weird way. After this he started coming to visit me VERY often at work. Like anytime he was closing on the same night as me he would come by after he got off (his store closed an hour earlier than mine) and just talk to me until my manager had to kick him out bc we were closed for the night. This didn’t bother me too much at first bc we usually aren’t busy at night and he wasn’t disruptive when I did have customers but at this point everyone that I worked with new about him and all assumed he had a crush on me. But he never pulled a move and we didn’t talk about anything in that aspect it was all strictly like platonic. Well one day (about 2 weeks ago) on his day off he drove to my store and mentioned that he was basically only there to see me and this was at noon during our busiest hours and he wouldn’t leave. He stayed there for 3+ hours and at this point was distracting me from doing my job. So I go on my break and whenever I come back he is literally outside scrubbing my car!!! (I had mentioned earlier that I had bugs on the front that I couldn’t get off at the car wash.) so like this guy is super nice and I didn’t know how to tell him at this point that I didn’t think I really liked him like he likes me. (I am NOT currently looking for any romantic relationship bc I just got out of a toxic one.) but when he came back I ended up giving him my phone number bc I was going to text him later about coming to my work all the time and maybe clear some stuff up. (Which I realize sent the wrong message probably) but anyway I didn’t mention anything about it at first and we were just texting but this is where I noticed some red flags. Bc he was super needy and wanted me to text all the damn time. He would double text if I didn’t respond in 2 minutes and then ask if I was mad at him or if something was wrong if I didn’t respond in 30. I also work 2 jobs so I’m really busy all the time and I tried explain that to him but he still wanted to text even at work. He also talks about himself a lot, I was having a bad day and I tried to talk to him about it but he immediately just started talking about how bad how day was. And then out of the blue he texted me the other day saying how it seemed like I didn’t really care about him bc I never ask how he’s doing and how he’s depressed and doesn’t really have any friends and needs someone to talk to. So I tell him that I do care but that I’m busy most days and just don’t feel like texting after a long day and that honestly I’m dealing with those same problems and I can’t be there to help him through it all the time. And I mention that I think he likes me in a different way then I like him and that I didn’t want to lead him on into thinking this might lead to a relationship when it wouldn’t. He responds by saying that he doesn’t even know how he likes me.(????? Am I crazy bc that’s the vibes I had been getting up to this point??) so we settle that and have other conversations for a couple days no problem. Then he asks me if ive calmed down since then bc he claims that I basically blew up on him out of nowhere and said how he was doing this and that wrong and it seemed like I had frustrations that had been building up over time??? I told him that’s not what I meant and tried to clear that up too. And we haven’t really spoken since that conversation

(Sorry this post has been so long there was just a lot of context I wanted to put out there.)

So he had mentioned to me that he now considers me one of his closest friends but honestly I don’t see it that way at all. He seemed nice enough at first but I did talk to his ex girlfriend on Facebook after seeing some red flags to see what she would say. And she told me that he was a good friend before the relationship but became really possessive really fast and almost scary towards the end of the relationship. But that if I set boundaries he would respect them but complain about them as well? My biggest thing is that he knows both places that I work, and he knows what car I drive. (Its yellow convertible bug so I stick out) and it’s become mentally draining to talk to him at this point. Im just afraid of what might happen if I tell him I don’t want to talk anymore . Should I ghost him or just keep talking and see if he continues to be needy