Eren hooks his index finger in the loop of your waistband to your jeans, pulling you closer to his side to prevent anyone from getting too comfortable with you. He then takes that hand and uses it to hold onto yours, lacing your fingers together as he leads you inside the college building.
Eren has always been somewhat... mean and nerve-wracking to the other students in the college; it's really no surprise that they're nervous to approach him. However, with his extroverted and loud behavior, he's always rendered confused as to why you're more timid and bashful.
"You're so shy, princess, I really don't get it," Eren laughs, glancing down at you from his peripheral vision, "why is that?" he adds, leaning down and planting a kiss to the top of your head.