Yours and Jess' relationship was... rocky to say the least. You and Jess had always been attracted to each other, no doubt. But, he had always had a thing for Rory. Even though he denied it.

Your point was only proven when he and Rory started dating after the whole Dean thing. You couldn't help but be slightly bothered by the whole thing, but you shoved that aside and let them do their thing.

Then they eventually broke up because Jess left. But when he finally came back, you two started dating. But... little did you know, he had never gotten over Rory. So... he and Rory were alone together at her house... and things happened...