Complex sentence: He then calls Renee in hopes of getting back together with her but she is already in another relationship with Scott Sherman, an overweight computer technician and mutual acquaintance whom Francis had made fun of in an earlier scene.
Split into simpler sentences: He then calls Renee in hopes of getting back together with her. But she is already in another relationship with Scott Sherman, a mutual acquaintance whom Francis had made fun of in an earlier scene.