To me it feels like he's in love with someone, but they're incredibly selfish ("I think that "I" is the only word in your vocabulary tonight"), and he's coming to this realization and becoming angry (coping with the break-up or breaking-up). ("Loudly I thought to myself "God, how do I find myself here again and again") But, still, he really loves her. Even if you're hurt by someone, you can still care, and you still have feelings for them, so he would "rather have a broken heart" and wait for her to come back to him and for things to fix themselves than "give up hope on [her]" and he's willing to wait as long as he has to. ("We've got all the time that we need")
To me it feels like he's in love with someone, but they're incredibly selfish ("I think that "I" is the only word in your vocabulary tonight"), and he's coming to this realization and becoming angry (coping with the break-up or breaking-up). ("Loudly I thought to myself "God, how do I find myself here again and again") But, still, he really loves her. Even if you're hurt by someone, you can still care, and you still have feelings for them, so he would "rather have a broken heart" and wait for her to come back to him and for things to fix themselves than "give up hope on [her]" and he's willing to wait as long as he has to. ("We've got all the time that we need")