If Lestat was your boyfriend, he would cry a lot. Like, a lot. He would cry crimson tears because all vampires weep blood for extra theatrical effect, thank you Anne Rice.
If Lestat was your boyfriend, he would never want to break up. Ever. That’s not a good thing. He is just too intense for even an immortal relationship. Lestat doesn’t understand that all mortal relationships inevitably end, whether by breakup or till death do us part, and since all vampires were mortal once, well, you get the picture. All other vampires seem to be cool with breakups. Except Lestat.