It is getting difficult to meet

But what is really sad is that it isn't because I'm forbidden to meet up with him. He's always busy, and I really do start to wonder if he ever was interested. Phone calls are never substantial, and he's usually in Schoenberg for the whole day (and night if you count voluntary practice). For me, the feeling dies. I don't feel so "be still my heart" nor do I feel that nervousness upon calling him. It seems more like an indifference to me, like I should stop caring. Already I worry if I seem too clingy. We have our own crunch times, our own schedules, our own set of demands. "Somehow we'll try to find a way to make this work out." So far it hasn't, and there appears to be no effort in attempting any further. Should I just give it up while I can to avoid getting hurt?