Here are both - Japanese and Winter Jasmine for OP to determine and compare
https://landscapeplants.oregonstate....asminum-mesnyi
https://landscapeplants.oregonstate....num-nudiflorum
While Japanese Jasmine has a bit more pointy leaves, they seem to be a shrub, not a vine.
Winter Jasmine is a vine.
OP - can you find their fruit/seed?
Here is a picture of a Winter Jasmine seed:
https://www.healthbenefitstimes.com/winter-jasmine/
The Japanese Jasmine seed is more oblong (can't find a picture).