You are not wrong to ask of this! I actually think you are giving him a lot of leeway with 2 weeks. He should know if he wants to make the relationship work. I do not believe that "once a cheater, always a cheater" but I do believe that if he wanted the relationship he would make an effort to be there for you and work harder at it.

I agree with Leeds, you have to have a serious talk, if he's not willing to do that for you, he's not worth it. I know it's hard but You deserve to have someone who is 100% in the relationship and will do anything for you..

Good luck