So me and my girlfriend have dated for around half a year and everything was alright. However, for the last couple of weeks I have been feeling uncertain of my feeling especially since I started thinking more about the future. I am 18 and got into one of the best unis in the country and by nature am a very hardworking person. I also hit the gym regularly and study most of the time. My girlfriend is a very sweet and adorable person whom I care for so much but she is completely different, she is rather on a depressed side, does not know what to do with her future and just goes with the flow in life. And lately I just started to realise that we actually don't have that much in common. For the lasts months whenever we hung out we would just lay in bed, watch smth or have sex. And it would go on like this for months. I suggested we go to the gym together but she is not enthusiastic about it. I was thinking of gaming together since I occasionally don't mind playing coop stuff but she is not into that either. In addition I know it is to early to think about it but she does not want children in the future and I do, so in this case aren't we just wasting each others time. On the other hand, breaking up with her would definitely break her and of course I'll be sad too for time being. She says she loves me dearly and it is crystal clear that I mean so much for her. Do you think it is time to call it quits or will this feeling fade?