How can you tell if you are love sick?

Depressed ?

Seems like only something you can know. If you're considering the possibility, it may very well be true.

you get this sort of burning feeling when you pee

And love sick meaning?

well, probably when the other part puts a restriction order against you.

Well... puts on Dumbledore's Glasses Wikipedia describes Lovesickness as "the informal syndrome of rejected or unrequited love or the absence of a loved one and covers physical as well as mental symptoms." So I'd say that if you are feeling depressed because you haven't found your special someone yet then thats love sickness. It this case I feel it is necessary to dispense these.

If however you actually are worried that there is someone who you simply cant toss out of your head then that might be something-else.

Is that code for an std?

How can you tell if you are love sick?

The vomit.

You can feel depressed without having a specific reason (probably your subconscious thinking about that person), you can feel phisically sick (for example tachycardia), you can loose your appetite, between others.

You can't tell until the alien sprouts out.

awkward boner all the time :3

The best comment about this that I've heard is - all those songs make sense.

Observe the colour of your feces for few days and see if there's anythig unusual.

Sounds like a job for waifu

Yes.

Whenever I'm love sick I completely lose my appetite

Puking rainbows.

i'll do anything! i mean any!

...you just know?

That's like asking,

'how can u tell if u need to pee.'

When you try to sleep and you can't stop thinking of her/him.

There was a man. A lonely guy he is. He felt so lonely that one day he went to the doctor.
"Doctor I want you to perform a surgery on me, transplant a girl in my heart so that I won't feel lonely," he asked the doctor and the doctor agreed with his request. So then the doctor put him into sleep, opened his chest with a miniature girl in a test tube readied to be transplanted into the man's heart. When the doctor incised the man's heart, the doctor was shocked. He had to cancel the operation.

After the man recovered from anesthesia, he was told by the doctor that the surgery was not a success.
"We had encountered a problem. We cannot put the girl in your heart."
"But why doctor?"
"You see, we cannot do the surgery. It turns out that you already have a girl residing in your heart."

-a rough translation from a story I've read before.-

I have no idea what you're talking about.

(no answer here)

What's love?

Diarrhea.