Sex things?????

So my boyfriend and I have been together for a little over a year and we've done some sexual things i.e. sexting, fingering, a hand job, and I've given him a blow job. I turned out to be really uncomfortable with all of this and I've asked if we can stop doing everything and he said yes. Well, he keeps trying to start sexting and its kinda aggravating because he's told that he would stop. What should I do?