unhealthy relationship

I am in an unhealthy relationship and in long distance as well, my partener is always busy with his studies and we don't talk anymore like we used to at the beginning of the relationship, I am truly in love with him but I don't think he really cares about us, I don't know how to get out of this relationship... we sometimes don't even talk for a whole day or if we do we will talk for a minute. I live in England and I see him every three months and he lives back in my country. He plans to go to Australia in the future and he always put himself first. And I am the one that is emotional, cries and get depressed, I always put him first and I compromise saying to him we can search for a place that fit for both of us as I cannot afford moving to Australia and what he replies to me is that's why what we have is a relationship and not marriage? I mean why be with me in the first place if you aren't thinking we will be together on the long run and he says to me all his friends got separated with their gfs, it's life. Well I gave my heart and my everything to this guy, I never loved anybody but him in my life. Am almost 22 and I had previous relationships but I didn't care about the guys. Idk things were different the past summer. Anyway what I see is that he doesn't put me first and he doesn't truly love me, he never tries to show it to me, he only shows that he cares when we are together and he always worries about me then but when we are in long distance he just says I love you on a text and we barely text. I mean those are just words if you do love me why don't you do anything and I feel this is making me paranoid and I need help I don't know what to do or how to forget about him and move on with my life. I ended checking his profile all the time and stalking him because I like to know what he is doing. I know all his friends well and I know he isn't cheating on me, I know he cares on a small level, I know he is so busy as he studies engineering and I know his shedule is mostly full cause I've lived it when I was there. When I ask why don't you talk to me he says because I know we will talk all day and I won't do anything for my uni which is a bit true cause we used to talk 24/7 until November-December but everything changed at the end of January when he finally decided that he wants to go to Australia after he graduates in 6 months. Okay I know he is busy but there is no excuse not to text your gf and say hi or good morning or at least something when you actually go on Instagram and like stuff etc. I need your opinion on this girls what do you think I should do ? Am really sad :(