On the first date what were some immediate red flags that made you not go on a second date?

I asked him if we could take it slow and after when I took him home he wouldn't stop touching my boobs in my car. I was visibly uncomfortable and tried asking him to stop but for some reason he thought I was joking and wouldn't. I was scared to flat out yell at him to stop so I decided to take it and as soon as I mustered up the courage I said I had to go and left as fast as I could.