Relationship Details
Celebrity Biographies
Mark Cornelsen dated T. R. Knight in the past, but they broke up in October, 2009. Mark Cornelsen dated T. R. Knight for 1.7 years. Mark Cornelsen is currently available.
Other - Other
Why Famous: Boyfriend of T.R. Knight
Age: 36 (b. 1988)
Entertainment - Actor
Why Famous: Dr. George O'Malley on Grey's Anatomy
Age: 51 (b. 3/26/1973)
Check out our New "Top 10 Worst Celebrity Husbands"
Relationship Timeline
| Event | Start Date | Length |
|---|---|---|
| Dating | 1/2008 | 1.7 years |
| Broke Up | 10/2009 | -- |
| Total | 1.7 years |
Children of this Relationship
No known children for this relationship. Add a child for this couple.
Affairs
No known Affairs for this Relationship. Add an Affair
Check out our New "Top 10 Worst Celebrity Cheaters"