So today I was up for getting a little frisky with my boyfriend and at first we agreed that he would just do stuff to me but then we both started doing things to each other , I finished and then he was close to finishing but then stopped and was like we agreed it was you just finishing.  Normally he always wants to finish. I tried talking to him and that didn't work he just got mad. Does anyone know what it could mean or whether I am looking into this too much?