Struggling with lust is a big one, I know it is for me, i sometimes feel like sometimes something is wrong with me because of how I look at men. I always thought it was guy problem but it is also very much a girl problem too
I think it depends on the ages but then I don't think it matters so long as there is love. People will always criticize what is not "normal" to them. I know I've had the looks, talks behind my back and what not because of me seeing a older man but in the end you do what you want and it doesn't...
You can report it to the janitor or a school admin. Is the grafitti about you? I know when there was some put up about me I reported it and they erased it.