Its not. Lets talk about physical age and time of life. You are now thirteen and you are pre-teen now (people will become pre-teen since 10 years old to 13 years old or 14). You may have a strange feeling when you sit next to a hot guy. You may want to stay alone better than with your family. Every human in the world will have that feeling. Cheer! and do not get pregnant before time.
Yes and the best way to know if you so is if you ever lost him. If you feel like your never going to see sunlight and if your so depressed that it gets then ugly then you do. And when you think about losing him, you throw up then yes, you do.
Most likely not. Your only 13 and very immature. But on the other hand my friends parents "liked" each other in middle school and dated through high school and college. But right now you can't really be in love. But that's doesn't mean you can't "go out"
I read an article the other day about teens being in love and if it's considered real or not. What it said is that yes, teens can be in love, but it may not be the same kind of love that adults feel. hope this helps :)