1. "We should hang out sometime."

"I understand we should hang out, but when? Don't just say sometime because that's vague." - Ethan, age 20

2. "I don't think I love you anymore."

"It's annoying and heartbreaking. Why waste my time?" - John, age 22

3. "I'm late" or "I'm pregnant"

"This is more scary than annoying, but still." - Adam, age 20

4. "I'm hanging out with someone I like."

"I thought we had something. Like we were hanging out and then out of no where sends this." - Alex, age 22

5. "A breakup text of any kind"

"Breaking up over text is the absolute worst." - Austin, age 21

6. "We need to talk."

"Just tell me what you're thinking instead of building up tension." - Brendan, age 20

7. "I don't care."

"Like getting food together. If she asks, 'let's get food.' And I say, 'Okay, where?' and then she says, "I don't care.' It makes me so mad." - Dylan, age 21

8. "Lol."

"I'm going to stop talking to you immediately if you just say 'lol.'" Garett, age 22

9. "Dude"

"Don't call me dude if you're a girl." - Brett, age 22

10. "K."

"It's the ultimate conversation killer and a huge turn off." - Ryan, age 19