He called me a tease!?

Ok so me and a few friends were at the mall im in 9th grade and my EX BOYFRIEND!(alec) is in 11th.I was wearing really short shorts and a tank top.My best friend sam(also ex boyfriend)who i still have a really big crush on was there.We were on the outside of the mall hanging out by the picnic tables and alec was like trying to make out with me he like kept kissing my neck and grabbing my *** and i REALLY didnt want to do anything because sam was there so i like pushed alec of me and i was like stop! and he like pushed me away from him and he was like ugh your such a tease you always look hot and a lot of guys say your really easy but dam why else would i go out with a 9th grader if i wasnt gonna get anything, and my eyes started watering and then my friend kylie started like cussing him out it was soo embarrssing because sam was there and he was like trying to get me to stop crying how should i have reacted?