I'm on my way for the night because I had a day 2 the morning after. I see these two alright milfs. I open with "you guys seem cute". The HB 7 of the milfs immediately begans smiling and talking my arm and stuff. She dressed in a short skirt and she looking good, have a think for those milfs. They both say that I'm as old as their kids, look like they're around 40 or something. They asks if I want to come with them to some concert they're going too. I didn't expect that and I fucked up said that I had to go somewhere else. I talk a little bit more with them where I tease them for liking guys that are half their age. Think I actually negged/teased too hard here. Several girls has told me that I'm mean.

I try to take this the HB 7s number and says that we should get some coffe together, but she won't. I leave them after that. I think she just wanted a SNL and that she was drunk. I should have followed them to the concert, but I guess I'll learn from thats what you learn from (your mistakes).
Going on a day 2 with me would have seen pretty awkward for her right? I'm 19 and she was probably 45 or something. I've heard that the milfs are the best kissers though.

imo where you went wrong was teasing them about them liking guys half their age. Since at that age they might have kids close to your age, they would start to think about their kids and think that you are too young for them... all in all just stay away from teasing about the age barrier and i think you'll be fine.