Hopefully, in time he will speak to you again and then you could try having the conversation in the manner I described previously. In the meantime, I would suggest:
1. Get a positive support system in place for yourself which includes loved ones and friends you can trust and share this extremely painful experience with and who will also help you through it.
2. You are dealing with a major life changing situation of having your relationship end so if possible, I recommend going to see a therapist, counselor, etc., in person on a weekly basis to help you deal with this major life changing event (-especially the guilt, hurt, confusion, frustration, anger, etc. that you naturally feel). If you are religious, your place of worship may have free counseling available (-many churches have free counseling).
3. Also, many support groups are free. Search the internet by your city and state for possible support groups in your area comprised of other people who are dealing with their relationships ending and go get emotional support from them.
4. Write down how you feel in a journal. Then close out each writing session by meditating: close your eyes, breathe in deeply and exhale. At the same time think of something peaceful. For example: a bright blue ocean with deep rich blue waves gently whispering against the beach. Meditating will help you through this difficult time and it will also help you to heal. It will take some time, but you will get through this very painful and difficult time if you do the above steps.