I tell them i don’t want to date and they still get mad when they realise i don’t few weeks in

I may get a few of you say “well why are you here when you aren’t looking to date” and fairly so i juat thought this page could be used to help my situation out.

So i have had this situation quite a few times where i am out with mates having a few pints (i never go out to try pull its always to have a laugh with my mates) and a girl has started chatting to me. After a while she has asked for my number/socials. I have then told them that i am not interested in dating (nothing personal to them, i make that clear) in which they proceed to ask a 2nd time. So i take it in the end. They are nice girls and we get on well most of the time. I am naturally (so have been told) a funny/fun and welcoming person to be around, they then ask me out. I remind them i am not looking to date, we have a laugh and a few weeks after the conversation goes stale or they just stop messaging, or you get the annoying 1 word replies “yes” “maybe” “lol” you get the jist.

I don’t kiss them or try anything further on from that and i have outlined to them i am not interested in dating people. My presumption is they think they can try change that and get annoyed when they can’t. But i don’t want to change who i am and not be funny/fun person to talk to or be around as its one reason why my friends are friends with me. There has been 1 or 2 that have paid off and i have actual friendships but this must of happened a good 10 times over the course of a year and a half. But its starting to actually put me off being around girls (platonic or not).

I guess what i want to know is why does this happen? Am i stupid to be a fun person when out with my mates and not trying to pull? What can i do to stop this in the future because it ends up being stressful? I have used lines in the past when receiving the question that its always nice to make new friends, is this wrong also?