Major Infatuation Issues!!! - Can you give me some Advice? Thanks!?

Once I find out that a certain guy likes me, I like him, and we start talking a lot, I become really infatuated with the guy. This is really annoying because then I become attached to them really quickly (but not in an annoying way), and if it doesn't end up working out then, yes I don't care and move on, but its just annoying. I hate it. Is it normal to become really infatuated with a guy when you've only been talking for a little over a week? Cause I feel like I have problems. Please don't make fun of me, haha. Any suggestions?