Should i go back out with my ex?

OK so we broke up about a year ago. i really liked him and he really liked me. Bu after a while a ton of girls started flirting with him and then people would always pressure me to go sit by him and suff and the stress really got to me so i dumped him but he still likes me alot and i dont know if i should go back out with him. Oh and so far out of the whole time we have beem broken up hes dated like 3 girls