Jealousy
It was a regular day on the Normandy. Garrus was talking with Shepard once again down in the cargo bay. Just about past missions and opinions on Saren. Nothing extraordinarily new. But today was a little different. While they were talking, the elevator opened. Nobody but the Commander ever really came down here. When Garrus saw Shepard's face, he had a clue who it was. Alenko. Garrus turned around to see the Lieutenant standing in the elevator. His expression read anger and annoyance. He sent a piercing glare at both Garrus and Shepard. He lingered for a moment, just staring, fists clenched, before heading off to his locker.
"What was that?" Garrus asked.
Shepard shrugged "Jealousy. He's jealous of you".
Garrus threw a glance at Alenko.
That's right. She likes me better than you Garrus thought.