Sex

I don't what it's happening to me those days, I want to have sex, I really want to have sex, sometimes just thiking about the "fact" turn me on. I would never make this with an animal or a guy.  I just want to have sex with girls; girls that i Know. When i saw them, i always imagine myself having sew with them. i can't help myself. Once, A little french kiss (I live in france, France kiss is usual) turned me on. I had to stop, or she would feel it. I even try to purpose her, i was nearly going to force her. Without success. Sometimes it works, but even if i do i just want MORE. What should i Do ?