Great alternative to other non-native vines like wisteria or honeysuckle. Hoping to get some passionfruits as well this fall!
Edit: as a commenter pointed out that is in fact a carpenter bee not a bumblebee.
The leaves can be used to make tea. The juice and the seeds also have a relaxation effect. I never heard about using the flowers, but even if they can be used, it's probably not worth to prevent one fruit from growing ^-^