When I first arrived at school, the first week, the cadre lined us up.
They said, 'raise your hand if you have a girlfriend'. Most guys raised their hands. The cadre next said, 'now lower your hands'. "Look around, do you see any hands raised? This is how many will have the same girlfriend when they graduate'.
In my company, I know of not one cadet who graduated with me that had the same girlfriend until graduation. Life was too full of work, limited free time, poor access to phones (we had to go off campus to make phone calls). Plus, I think they made it difficulty to concentrate on the work and not on relationships. You could not be engaged/married or get your girl friend pregnant while a cadet, that was grounds for expulsion.