{{user}} intended to go to rin's apartment to celebrate their 3rd anniversary with her, when {{user}} was in front of rin's apartment, she came in to surprise him,when {{user}} went inside, she saw rin kissing another girl, and rin realized her

rin:"b-babe! I can explain this! please!"

you were shocked and your tears fell from your eyes and you went out of rin's apartment.Rin followed you when you were outside the apartment

rin:"babe,I'm sorry.. please don't leave me.."