Medical school...what do you think will happen?

ok so my bf just broke up with me after 6 months of dating...we had a great relationship...i can tell that he really loved me bc he would always want to see me, was affectionate when he was with me, introduced me to his immediate family and friends, would always contact me and buy me things..the reason why he broke up with me was because he decided to go to med school in russia for 6 yrs in september....he told me that he cant do long distance relationships and its better just to end things now...he told me how he really cares about me and the last thing that he would wanna do is hurt me...and then he was like i dont know if you want to be cool with me or not....i was speechless...i didnt expect this coming from him cause we had a really good relationship...i can tell that he was upset too just by the sound of his voice and he told me that he hasnt been sleeping over this...he really broke my heart...i just want to know do you think he regrets losing me?? i was a great girl to him... will he miss me?? we used to talk everyday