Complex sentence: He is often seen involved in fixing the plumbing in the building and in Bret and Jemaine's apartment as well as making questionable comments about his behavior such as admitting to breaking into the apartment in the night and kissing Jemaine while he sleeps.
Split into simpler sentences: He is often seen involved performing maintenance in the building and in Bret and Jemaine's apartment. He has admitted to breaking into the apartment in the night and kissing Jemaine while he sleeps.