To put it bluntly, a girl studying abroad will be very lonely, so she will find a boyfriend to accompany her, whether she really likes it or not, but simply needs someone to accompany her. So you should also be psychologically prepared to accept that she has a boyfriend.
You can ask her if she has a boyfriend. This question is nothing. Since we have been friends for so long, there is nothing to hide.
Boys and girls will have feelings when they are together for a long time.
Sometimes distance is not a problem. My cousin and his girlfriend have been together for seven years, since high school. In the past seven years, they have been further apart, one in China and the other in Austria. So sometimes distance is not a problem, as long as your love is true enough to stand such a test.
This distance is really beautiful sometimes. Sticking together every day will be boring after a long time.
All problems are not problems in front of true love.
Come on!