Select where combined with exists
This is my solution
select t.*
from dating_likes t
where exists (select t1.like_id,t1.user_id
              from dating_likes t1
              where t.user_id = t1.liked_user and
                    t.liked_user = t1.user_id)

The output is this :
like_id  User_id   Liked_user
 56       13          11
 54       11          13

I don't know which solution(using Join or Exist) is better in terms of performance but I like to know if anyone wants to share their opinion.
Thanks