That's true. I haven't talked to anyone except my therapist and they don't really know what is going on. It is such a relief to be able to talk on here.
Just be careful talking to your therapist. You can get away with it a little bit, but always stress this: 1) You have no PLAN, and 2) you have no INTENT.
Really #1 is an absolute killer, they really don't like to hear that you've thought through exactly how you would commit suicide.
For #2, when you talk about suicide with your therapist, always stress that you don't
want to commit suicide, but that the thoughts persist nonetheless.
Following those guidelines you should be able to broadly talk about your suicidal ideation a litttle bit, but remember that for a therapist: you killing yourself means a world of trouble for them. If they think that you are at risk (or, more correctly, that their job is at risk) they'll follow the proper procedure and have you hospitalized to avoid the headache. Just be careful how much you trust them. At the end of the day, everyone looks out for themselves first, and your therapist is going to value keeping their job over anything else.