Complex sentence: Brian then re-assures Meg, and the two begin to make out after Connie runs away crying once meg and Brian finish Making out Brian vomits in the middle of the hall and claims that it was the wine he had been drinking.
Split into simpler sentences: Brian then re-assures Meg, and the two begin to make out after Connie runs away crying. Once Meg and Brian finish making out, Brian vomits in the middle of the hall and claims that it was the wine he had been drinking.