Do I try to be friends? Help!!?

A little over a month ago, I broke up with my first boyfriend. The relationship lasted a month, and it was going pretty well. I believed we were getting too physical. Dates were spent in my bedroom, and well, you get the idea. When I broke up with him, he said he would never forgive me, but we could still be friends. I have tried texting him and have had conversations with him, but he always says he has to go do something and blows me off. Before the relationship, we were pretty close friends, and I want to become that with him again. What do I do??