Need a suggestion

Well I am living with my cousin sister we use to be close when we are younger. And we use to make out too but as we frew distance between us increase but I still remember Licking and kissing her. As of now she have a long distance bf. I really want her back as I use too. I don't know if she still remember as we where so young that time. I want to really talk about that and might wanna be lucky I don't really know how can talk to her about this cuz it's almost a decade we did that. Need a suggestion