who played the blonde girl?

After Holly's death, Ira started dating another girl. She was also blonde. I cannot find her listed anywhere in the cast. She was only in a few scenes. I don't remember if they ever mentioned her name. When she broke up with Ira, she had another guy standing in the doorway. Ira was blocking her way on the steps. Does anyone know who played her? She looked so familiar.

Tomorrow's just your future yesterday!