Search Results: flirting too much

I felt like I had a strong connection with him because me and him would literally agree on everything and I felt like we were almost the same person with very similar points of view on everything, I should’ve seen that as a bit of a red flag too tbh. And the fact we are both autistic, and had very similar special interests.
Everyone says how amazing he is, but he’s leading me on (because I really really fancied him and he could tell), used me for sex once, then gaslights and manipulated me. All his answers are always vague. It’s like he’s either very blunt and cutting… or extremely vague and won’t give a direct answer. Also during sex he refused to use lube or condoms and I stupidly went with it, I’m worried he might’ve possibly done that to give me an sti (but he seemed pretty clean down there). He was also very selfish and I was on top the entire time. The afterwards he says he feels bad and that he’s crossed the line and that we both need to put a line there and not cross it again… but the next lesson starts flirting with me again… then I told him that I won’t be getting lessons for a while because I need to focus on coursework… so I’ve left it at that.
The whole time I felt like I was nothing to him, even though I was giving him everything pretty much and I was feeding his ego.
strange thing is, he got divorced AND left the Uni job (he taught me at uni too) at the same time and said it’s because the principle offered him no work after an argument happened and put it down to the principle being petty. He also said how he has a terrible temper and got a disciplinary after bursting into a rage at another staff member… so this is really suspicious. I also felt like he was opening up to me by telling me all this stuff… but really I was paying for lessons and he was using me as a therapist or thought he could take advantage. Also he’s very good at what he does, but seems to over inflate it and lies about how many gigs he’s done etc.

He said months ago that he doesn’t reciprocate my feelings, but recently started flirting back, then backing off, then flirting back…. It’s really messing with my head and I feel like I’m going insane… it needs to stop. Doesn’t help that he’ll cheer me up when I’m down either.
And he’ll respond well to my sexual flirting or carry on conversations about sex… and he’ll be clearly enjoying it, like smiling and blushing and he even once got hard around me…. I dunno… it’s just too much.

do I send him a message saying it’s best we don’t talk anymore? Do I just gradually pull away? What do I do?
also he’s much older than me. I should’ve stopped it a year ago. Weird thing is that he never followed me back on instagram, but he follows everyone else back… but he would sometimes comment on my Facebook posts..