Ben Affleck, Jennifer Lopez divorce may test Jennifer Garner's own love life: expert

Jennifer Garner has remained a supportive friend and co-parent with ex-husband Ben Affleck, all while maintaining her own notoriously private relationship with businessman John C. Miller.  

Garner and Affleck appeared in great spirits together last week to send their oldest child off to college in Connecticut, the day before his now-estranged wife, Jennifer Lopez, filed for divorce after two years of marriage.

While mostly elusive and rarely spotted together, Miller and Garner stepped...