Forever-what a tricky concept, right? I mean, you've got unlimited time, which should mean unlimited resources. Unlimited opportunities. But of course it doesn't. Because the one thing you want is always just out of reach. Because you're just slightly too...limited.
Say, for example, that you're an incredibly powerful, devastatingly good-looking, completely captivating King of Vampires. Just hypothetically. And just say, maybe you're in love. And maybe she doesn't know it. And maybe, just maybe, she's in love with someone else (who doesn't know her like I do) who's royal (and stuck-up) and handsome (if you're into men who look like girls) and could give her the world (not that she needs or even wants the world-hell, she just wants somebody to play with her and hold her and make her feel like a girl). But hey, what do you know, right (what does she see in him)? You try to help. You try to be happy for her. But in the end, you should be able to get her. And you can't. But hey, you've got forever to dwell on that. And she doesn't.