Re: what are SSRI
Just to add a bit of information.
Yes SSRIs are antidepressants and the reason you've heard that they help is because a lot of these pills cause delayed ejaculation. But, you should know that they can cause sexual dysfunction as well.
There are a lot more options to help with PE first. Research it and find some techniques (like PC muscle training) before you jump to the antidepressants because that's a gamble. I am on a couple of antidepressants, one which is known for not having sexual side effects and one that is. I can no longer orgasm due to the one. Very frustrating.
One tip - do you and your partner use a condom? They reduce sensitivity somewhat and that may help.
Good luck, and consider asking your doctor for some advice. (I know, probably the last thing you want to do)