I miss him and it hurts

I recently went through a breakup, but this wasn't a wanted breakup. You see, about a month ago my ex's mom became ill and had to stay in the hospital a couple of nights. He basically lived in the hospital day and night at this point and he felt in his heart that now was not the right time for a relationship. The docs found out she had a blockage that had needed to be removed, mind you, she had been fighting against cancer for a good while at this point already. She was then put into surgery and I told my ex to call when the surgery was over .. Unfortunately it was unsuccessful. A few weeks after this, she passed away and it was so sudden and way too soon. I still can't process it, much less my ex. Now my issue is that I miss having him as my boyfriend.. because I just want to be with him as much as I can, hold him, touch him, make him feel loved .. but I know it's selfish of me to even bring up the topic after what happened. I stay up sometimes listening to sad tunes, loooing at our pics, wishing he would feel my heart from afar. I miss him so much. On the night of the breakup I asked if there was any way we could continue the relationship and he said no .. and I get it. I asked if we would get back together in time, and he said he wasn't certain whether we'd come back or go our separate ways which still scares me to think about. It would break me to see him with another girl (obviously I'd have to support him) .. But it's just a lot. I know he needs time to heal, but I miss him..