Reflexive verbs in Russian, like "увидеться" (which means "to see each other"), have a special ending: "-ся" or "-сь."

To use these verbs in the past tense, here's what you need to do:

1. Start with the verb: Look at the base form of the reflexive verb. For example, "увидеться."

2. Change it to past tense:

   • First, take off the "-ся" ending.
   • Next, change the verb to fit the past tense by adding a new ending based on who did the action:
     • For a boy: Use "-л" (so it becomes увиделся)
     • For a girl: Use "-ла" (so it becomes увиделась)
     • For something neutral: Use "-ло" (so it becomes увиделось)
     • For a group: Use "-лись" (so it becomes увиделись)

3. Examples to make it clear:

   • Он увиделся с друзьями. (He saw himself with friends.)
   • Она увиделась с мамой. (She saw herself with her mom.)

By knowing these steps, you can easily talk about seeing each other in the past using reflexive verbs!