I had sex with my colleague, and he told others that I felt so dirty that I was afraid to face other colleagues for fear that others would say me.

Is there an emotional foundation? If not, consider it an adventure. Quickly adjust your mentality and return to normal colleague relations. Don't be embarrassed. Do something. . However, in the future, you must refuse any hint from him or the possibility that this kind of thing will happen again, otherwise, you will get hurt sooner or later. .