The Daily Telegraph reports that the 19-year-old actor found the scenes "incredibly awkward", as they were filmed on their first day of shooting.
Cyrus, however, revealed herself to be less nervous, telling The Sun that her co-star was "gorgeous" and that things "could be worse" than getting to kiss him on screen.
The 19-year-old former star of Hannah Montana also recently stressed the importance of teaching children that "sex is a beautiful thing".
Booth, who recently found fame in the BBC's Christmas adaptation of Great Expectations, has spoken highly of his co-star, claiming: "Miley is great."
However, the actor claims that he hasn't gone as far as to start listening to her records, stating: "It's not the kind of music I would listen to, but I know that it is very popular."
LOL is out on general release now.
Watch the trailer for the film below: