It depends on if you're male or female. If you're male it's perfectly natural due to hormones. If you're female it may be that you're experiencing a natural (not harmful) medical condition that causes you to have mood swings and constantly think about sex. Either way, it's all because of your hormones. I think about it all the time because I'm going through puberty, so you're not alone.
an obsession :)
Maybe Its Love ;)
no. it's lust
yes
Have sex with him or tell him to, well... beat it, for lack of a better term.
Sounds like a mental problem to me.
you cant do anything men, admit it your in love with her
try and have some fun!
It's called google translate :)
You cant stop some one from thinking about some one else you can only distract him by putting something more interesting in front of him.
Because you may be thinking to hard on something else instead of enjoying your time.
You cant once u start ejaculateing u cant stop until it stops for u and then u can still have long sex if you want