<human>: Can you succinctly summarize the text in 1-3 sentences?

Basically as the title goes, my boyfriend and I were just talking about marriage and he said that if his life turns out well, he would marry me. I tried to get him to elaborate more and he really just wouldn't. Previously he said that he wants to be with me forever but it seems like he often changes his feelings about me. 

I know I'm young and I'm not really thinking about marriage, but is it worth it to stay with someone even though he's not sure about our future together? 

Is it worth sticking things out because I do love him and I know he loves me but he just doesn't show it at times? I feel like he takes me for granted and I feel mad that I feel so...disposable to him because the chances of us being together in the future is determined by "if his life turns out good"
<bot>: My boyfriend says he will marry me eventually if his life turns out well? What does this mean what do you guys think I should do? I'm just confused.