In my opinion, a 19 year-old is too old to be dating a 13 year-old.
Should a Parent Allow a 13-Year-Old Daughter to Host Her 19-Year-Old Boyfriend Overnight, or Is This Parent Crossing the Line? (msn.com)
Should a Parent Allow a 13-Year-Old Daughter to Host Her 19-Year-Old Boyfriend Overnight, or Is This Parent Crossing the Line? (msn.com)