They didn't break up over that stuff, though. I assume it put a lot of strain on their relationship and struck some cracks into it that never fully healed, but afaik, they stayed together for some time even after that.
It's really weird to look at Dobson and realize at some point he was able to attract a girlfriend. Dobson (being his usual prince charming self) drew his GF a bit on the chubby side, so I assume she was not very confident of herself and possibly socially a bit awkward (she seems to have been a bit of a geek, too) thus she put up with Dobson's shit far longer than she should have.
Cause, really, what did he have to offer?
It seems he was afraid to leave the house after dark, he doesn't enjoy socialising, he certainly didn't enjoy going to a concert (what kind of a sheltered fucking milquetoast pansy has no experience of going to a concert in the first place?).
As I said, it's quite depressing to think that this guy peaked (both artistically and generally) like 10 years ago.