Please help me? Thanks?

I am a first-time bf, but my gf is not new to the idea. We love each other alot. We are 7th graders. Well my first question is, what is synonym of sweetie and honey and stuff? Question two, what should I do that is nice and can keep her happy and stuff? (We don't want our family to get involved, so we can't just do anything.) Question three, what could I talk about in chat/text conversations? Because sometimes we run out of things to say. Thanks for tring to answer my questions. Are there any more tips on how to be a good bf? If you have any tips, you can write them with the answers too. Thanks a lot, guys.