Me and my ex have an intense physical attraction towards each other but...?

when it comes to conversation we kinda go blank. We've had an 8 1/2 year relationship so yes we know each other very well in bed.. but i'm a little nervous because i don't know what to say... i don't want our valentine's dinner to be tarnished by the complications of our relationship... I love him and he loves me too...but we know it's not exactly the same as it once was... How do we get to know each other again...Is there a question game we could play that will ease the tension? What should we talk about and what should we avoid? What should we do on our date? i'm excited that i'm gonna see him (& get some....) but i want it to be more than one nite.... a lil help please...