My bf of two years(we live together) left last month to go for law enforcement training?

Hon, I did this too for law enforcement. Leave him be and don't gibe him problems. He has got more problems on his shoulders then you'd ever believe. I can't even explain it to you but after it's over he'll be all yours. Give him space for now in something he lives for. It's an honorable position he's working for. I have many friends that wear a badge and it very impressive. Help him, don't hinder him.