it was painful

he didn't have lube this time and was insisting to fuck me in the ass. I'm usually chill about it but only bc in the past we had lube. I blew him and he was like that should be enough lube. then flipped me over and shoved in in my ass and OUCH. it has never felt that uncomfortable before. I thought it wouldn't hurt that time cuz he is average and it wasn't painful before. and he always preaches about doing anal properly (warmup w fingers/butt plug/ go slowly w a lot of lube) but he did it completely wrong. idk I guess I'm pissed but I knew better ?