Kimberly Quinn (Donna)
Alan was dating Donna after meeting her on the blind date that Charlie met Linda on. After Kimberly guest starred on two episodes of Two and a Half Men, she continued acting. Perhaps, you saw her as Gretchen on FX’s Terriers, Tess Masterson on ABC’s Twisted or as Holly on Netflix’s Gypsy. Now, she’s married to Theordore Melfi who is a well-known producer. His works include Hidden Figures and St. Vincent, in which Kimberly played Nurse Ana.
Tammy Lauren (Shannon)
During Judith and Herb’s wedding, Alan met Shannon. Though they didn’t actually date, they had a fun run. Tammy went on with her role as Detective Maggie Sullivan on The Young and the Restless after playing Shannon. Also she guest starred on Criminal Minds. However, it seems like she has taken a step back from acting. Also she’s been married to fellow actor Guri Weinberg since 1997.