Wow, this strikes a chord... I'm the one who got an offer from Cambridge, and went. My bf thinks I should have stayed in London with him - he would have chosen a London uni for me without hesitation but will now go elsewhere. Often, when I say something like how I miss him he reminds me that we could have been together had I stayed. He thinks it's 'selfish' that I went.
Writing it down like this makes it sound much worse than it is!! It's only a minor issue most of the time (the rest of the time is perfect!), but every now and again it does lead to arguments when he has been feeling sad about it and wants me to transfer to be with him. I guess he's coming from your bf's point of view whereas I was the one trying to decide things with minimal reference to him, because a) we might break up (though I really don't think we will) and b) if we are meant to be, our relationship should be strong enough to cope with the fact that I have ambitions outside it; and it's only 3 years, it's not like it's going to last forever or for an indeterminate period of time. Anyway, it's a bit messy but since this is the only issue we have (and I can't fault him that much just for missing me!) and it only flares up now and then it's not really a problem. I think you should just take a step back and let him make his own decision - he's responsible for his own happiness and if he knows he wouldn't be happy being away from you then that's up to him. At least either way he won't feel guilty since you aren't piling the pressue on, whereas I sometimes feel like a bad girlfriend for doing exactly what you asked your bf to do.