I think this is about the girl in the relationship being unfaithful somehow. It's most likely she cheated on him, but in a sense it could be about anything.. Whatever it is, she knows it would ruin the relationship - "Keri, wait things are going great." And if she told him the truth, he wouldn't be able to handle it - "Gotta tell him the truth(He couldn't handle it)". Whatever she is hiding from him, its killing her and sooner or later he'll need to find out.
I think this is about the girl in the relationship being unfaithful somehow. It's most likely she cheated on him, but in a sense it could be about anything.. Whatever it is, she knows it would ruin the relationship - "Keri, wait things are going great." And if she told him the truth, he wouldn't be able to handle it - "Gotta tell him the truth(He couldn't handle it)". Whatever she is hiding from him, its killing her and sooner or later he'll need to find out.