Am I in the wrong ???

SO basically me and my ex broke up( let's call him newton) because was talking to his ex and newton also wanted to keep us a secret so I was like no sir we r done ,but while I was dating Newton I meet this other guy lets call him blondie who I became friends with and slwoy started to have feelings for but I didn't want to cheat so I broke up with newton and then after that I started to date boldie and yes we r together still to this day ( Me and Blondie) but my ex ( Newton) is saying I'm the a-hole because I was talking to another guy and I didn't have the curticsy to wait at least a week untill I got with someone else so what I'm asking am I in the wrong or is he? or is it both PLs help if you can.