"I had a really, really hard time working with (Jennifer) Aniston because I was so in love with her. I was infatuated. I was speechless. I'd get all bubbly and forget my lines and completely blank... It was so difficult." Former child star Cole Sprouse admits his Friends appearances were tough. The Suite Life of Zack & Cody star played David Schwimmer's TV son Ben on the sitcom.