ever since the beginning of season 3, i saw it coming. and i think a lot of bronies did too. I don't have any problem with it at all. in my opinion it just opens up more doors for the characters evolution and the plot.
I think this will happen. but i also think that there is going to be an episode based around this, with twilight realizing that she needs to spend time with her friends and live her life. it does make a good friendship lesson that mlp is prone to.