history: I thought my best friend was going to be able to visit me this summer, but it turns out he can't take the time off from work right now.  I thought my best friend was going to be able to visit me this summer. But it turns out he can't take the time off from work right now. I'm a bit bummed_comma_ as I haven't seen him in a long time. Would you be able to go meet him instead?
current: No, unfortunately I can't make the drive right now. Maybe next year. 
next: That sucks. I would be disappointed also. Hopefully yall can make some time soon to get together.