Complex sentence: After getting to know eachother over their'mock dinner', the two began dating and when Terry was transferred to another division, Debbie made the decision to leave with him and she got engaged to him on the night of her leaving party in The Vic.
Split into simpler sentences: After getting to know eachother on their'mock date', the two started seeing eachother and when Terry was transferred to another division, Debbie made the decision to leave with him. She got engaged to him on the night of her leaving party in The Vic.