The 20-year-old plays Kenny in the new comedy.
"It was fantastic. The kiss scene was awkward - horrible for Jen and Emma, but Kenny loved it," Poulter told The Sun newspaper.
"This was my first three-way kiss," he added.
The actor teams up with actresses Aniston, Roberts and actor Jason Sudeikis for the first time, in the Rawson Marshall Thurber directorial.
--IANS (Posted on 20-08-2013)