"Not all guys are outright about their interest, but there are certain signs you can definitely look for. If you've developed an inside joke, that's for sure a good thing. How polite is he being? Is he buying drinks? Offering his seat? Walking you home/to the train? Is he staying out way later than he should? Generally trying to make sure you're enjoying yourself? Is it super easy to convince him to get one more round when he has to wake up for work at seven? He might be miserable the next day...but he probably won't mind." —Brady O.