>> had you seen twins before? >> not that many. >> it was very overwhelming. i'm like, yay, we're not freaks anymore. >> and we fell in love. >> it was in our early 20s when we went. i said, if we found twin guys, that would be kind of neat. >> we would still have our twin bonds together, and we could maybe live together. >> their first summer at the festival, jill and jenna met phil and doug. another set of identical twins. when the brothers invited them on a cruise, jill and jenna didn't hesitate. >> we looked at each other and said, we're going on the cruise. >> this was their chance to find partners who understood the twin bond. >> once we met them, our whole world changed. we found somebody who could relate to us. they knew how close our bond was, and they weren't going to break our bond. >> by the end of the one-week cruise, the four of them were