<human>: Can you provide a brief overview of the text?

My ex and I are currently grad students in the same department. Thankfully we work in different labs. Until now we had the same friends. He kind off stopped hanging out with everyone (deleted himself off the group on WhatsApp) and blocked me on WhatsApp. Which is how I knew he didn't want me around anymore. When I texted asking what happened, he said he wants space. We had recently argued. I agreed. A few days later. I tried to ask him if we could still stay friends, I was still annoyed enough with him not to want more. He said no and it was none of concern. 
A week after that, he was leaving for a couple of weeks. The first week he was away, he didn't text me at all. But the second week, he replied to NY text and it was a semi normal conversation about his trip. We kept talking during that. Now that he's back, he's back to barely acknowledging me.I don't know what to do... I miss him and want him back to give this a real shot.. But at the sane time I know it might not work because of age and distance- he's probably moving away soon. Don't know when or where. A little background on our relationship and arguments:
When ever we argue, I always have to fix stuff. He never tried to. Even when it was his fault.  We have always had a cyclic relationship, where we argue and don't talk. N then get back together after a while. Most of these are caused by misunderstandings and differences in where we are in life. He is about to be done with grad school and wants to settle down. I just got out of undergrad and started grad school. 
The age difference made me hesitate initially. especially as it was all moving too fast. I'm not built for flings, but I usually need some time to get into things. And I didn't have that time with him. 
I miss him and love him. And I think I am willing to give it a serious shot. How do I tell him that? Or should I give up?
<bot>: age difference has lead to crazy misunderstandings. I was scared of committing but by the time I wanted to, he blocked me on everything.