Don't hold on because you think there will be no one else. There will always be someone else. You've got to believe you are worth more than being repeatedly hurt by someone who doesn't really care...and believe that someone will see what you are really worth and treat you the way you should be treated.
I did this triangle congruence sorting activity with my high school students the other day and they loved it! We glued it in our interactive notebooks when we were done and its such a great visual reminder for them to remember the different ways to prove triangles congruent.