I posted this on the plant ID forum but haven't gotten a response so I'm trying here too. I've had these vines for a long time and always thought they were both Snail vines (Phaseolus caracalla) because the foliage was the same though only one had ever bloomed. The other bloomed today and is obviously different. Is the second one a Corkscrew vine (Vigna caracalla)? The second flower is very fragrant and the first has no smell.