A 47-year-old pushed his girlfriend over and tried to drag her by her leg from the bedroom at her Clitheroe home.
Hyndburn magistrates heard that Terence James Forsythe and Alison Coulter, had walked away from an earlier row.
Graham Parkinson, defending, said both parties had been under pressure due to Miss Coulter's "messy" divorce.
Forsythe, of Stoneygate Lane, Ribchester, admitted assault and criminal damage.
He was remanded on bail for the preparation of a pre-sentence report.
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