Not sure what to think with person I’m seeing

Hi so I’ve not used Reddit to make posts like this before but I really don’t know who to ask who’s gone through the same experiance before or knows what to say but here’s the issue:

I have recently met a guy(t) and things have been really cool. Hanging out and watching films and I’ve introduced them to a friend which they are going to live with next year. We are now a friend group of 4, me and my friend and him and his friend (I’m not moving in with them next year) (while getting to know him I have found out he had cheated early this year and regrets it completely and has gotten help for it)

So recently he has asked me out after knowing me for a month and I said that I what to take things slow cause I am very dedicated to my work at university and I’d prefer to take things very slow until the end of uni which he completely agrees with, we spent time one to one on a little date the other day( on the walk back he admitted to me that recently him and his friend had slept together but he regretted it and said never again to them, which I wasn’t that bothered about cause Its not my business I don’t think) and he stayed over which was great and we flirted and ended up just getting closer but never anything more than hugs and touches.

So today I spoke to his friend and had found out that he(t) had spoken about me for a bit and slowly had developed feelings HOWEVER did sleep with his friend, when they would sleep together would mention me and talk about how much they like me (not romantically) but on the Saturday they had stopped sleeping with their friend officially cause they want to get closer to me and they told them they don’t want to hang out one to one with them cause it is awkward and they felt uncomfortable for a while with them (as they are hyper sexual)

Im really conflicted on what’s happening. The night he slept at mine I basically said to them “I don’t want to date you or make anything official not until a year or so when I’m not stressing with university but we are ok to flirt and such and hug but if you go off with someone else in that time I’m gonna be over it and stop with flirting etc “

Is that the right thing to of said or do? I’m not sure what to even thing or do in this situation and I don’t want to get hurt . I really like this guy and we get along really well and i want to get closer but is it too risky? Or what I have said is wrong?

At the moment I’m wondering if they just agreed with what I said to take things slow and they don’t actually want to as they are flirting with me sexually on messages which I’m gonna tell them tomorrow to stop as I’m not exactly comfortable with it but also and also keep calling me cute and handsome (which again I’m not sure if they are just doing or if they genuinely mean it) when we are supposed to be taking stuff slow but again I’m not sure if I’m doing anything right. This is my second ‘relationship’ I have been in and have been used before in my first relationship

If there’s any advice or if anybody has been through the same please tell me if I’m doing something right or wrong here thank you