<P> Beullah `` Lisa '' Wilkes , portrayed by Nia Long , was introduced in the fifth - season episode , `` Will 's Misery , '' as the girlfriend who tames Will into forsaking his womanizing ways . The two fall deeply in love and are engaged to be married , going so far as the ceremonies twice but never actually tie the knot . The first time , they elope to Las Vegas and try a Shaft - themed wedding but walk out on the ceremony after being interrupted so many times and realizing they were not ready . The second time they try to get married , Will starts feeling some doubts , especially when he notices that , like Jazz , he also knows very little about Lisa , culminating in him asking if Lisa is her real first name , upon which she reveals it 's actually Beulah . Will manages to overcome these doubts but Lisa reveals that she is also having doubts and the two decide not to marry . She is never seen again . The night before the wedding , a rivalry flared up between Will 's mother and Lisa 's father . In order to help them work out their differences before their wedding , Lisa and Will send them to a restaurant to get to know each other and work things out . However , the plan backfires when they get along too well and Will catches them in bed together . Ultimately the two end up getting married at the same ceremony , resulting in Will and Lisa becoming step - siblings . </P>
<P> Beullah `` Lisa '' Wilkes , portrayed by Nia Long , was introduced in the fifth - season episode , `` Will 's Misery , '' as the girlfriend who tames Will into forsaking his womanizing ways . The two fall deeply in love and are engaged to be married , going so far as the ceremonies twice but never actually tie the knot . The first time , they elope to Las Vegas and try a Shaft - themed wedding but walk out on the ceremony after being interrupted so many times and realizing they were not ready . The second time they try to get married , Will starts feeling some doubts , especially when he notices that , like Jazz , he also knows very little about Lisa , culminating in him asking if Lisa is her real first name , upon which she reveals it 's actually Beulah . Will manages to overcome these doubts but Lisa reveals that she is also having doubts and the two decide not to marry . She is never seen again . The night before the wedding , a rivalry flared up between Will 's mother and Lisa 's father . In order to help them work out their differences before their wedding , Lisa and Will send them to a restaurant to get to know each other and work things out . However , the plan backfires when they get along too well and Will catches them in bed together . Ultimately the two end up getting married at the same ceremony , resulting in Will and Lisa becoming step - siblings . </P>
will smiths girlfriend in fresh prince of bel air
will smiths girlfriend in fresh prince of bel air
Beullah `` Lisa '' Wilkes
Beullah `` Lisa '' Wilkes