Who should make the first move in making amends? Am I just being stubborn?

My boyfriend of a year and a half and I haven't spoken since Saturday evening. He was supposed to come over that evening but we ended up arguing on the phone (one of about 3 arguments we've had our entire relationship). He chose not to come over and I haven't heard from him since. No phone calls, no e-mail. Nothing. Just two weeks ago, I told him that I needed to rethink the relationship because it wasn't working for me; he has certain behaviors that need to change. I spoke to him in a very loving way, not issuing any ultimatum. I just let him know some things bothered me. Since then he's been very attentive and has made it clear our relationship (and I) mean alot to him. I have been a very caring, giving and loving partner, but have felt he's not carrying his weight in the relationship... the argument was because I hadn't heard from him all day and it was a) unlike him, b) upset me, sometimes I feel like an afterthought. QUESTION is do I wait for him to call?