The Making of Jurassic Park says that Lex had a crush on Dr. Grant

[Justin_Bailey]

@Freudian_Slit

But then why is Alan irritated when Ellie flirts with Ian? And why would he tell him to back off if he wasn’t interested in her?

It’s more clear in the book, but Malcolm is a whore and a big fan of the “fuck anything that moves” philosophy. While Grant may not want to date Ellie, he knows she’s better than Malcolm.