Yiddish: At first you can't stop looking at each other, later you can't look each other in the eye.

SOURCE: Stutchkoff, Der Oytser fun der Yidisher Shprakh.

‏‏אַפֿריִער קען מען זיך ניט זאַט אָנקוקן, דערנאָך קען מען זיך ניט קוקן גלײַך אין די אויגן.

Afrier ken men zikh nit zat onkukn, dernokh ken men zikh nit kukn glaykh in di oygn.

At first you can't stop looking at each other, later you can't look each other in the eye.