vampire romances are fucking weird

like vampire diaries for example, we have Elena being 17/18 year old at the start of VD while her love interest Stefan a 171 year old. That isn't right at all, yet because Stefan looks like a 17 year old people are fine with accepting it? No one questions it at all. Now imagine Stefan looking his age. Now think about this, some old ass guy wants to come and hang out with teenagers, this is what he chooses to do in his immortal long life. what?

Any Vampire Diary fans wanna explain this to me?