Dating two guys - when should I cut it off with one of them?

I am in a bit of a dilemma...
I'm "dating" two guys right now, both of which I have feelings for. I only went on one date with one of them (a second date is set) and I've been on two dates with the other (the third date is set) .

Am I wrong to be doing this, and should I cancel on one of them? Just something feels wrong about this... please let me know what I should do! When should I decide? What would you do?

Updates
+1 y
Thanks everyone for your advice. And just so you guys know, I am of age where I live (17) and it is ok. This is my first experience dating and this is my very first time going out, so everyone's advice is appreciated.
I think what I'll do is go on one more date with the first one and take it from there. I am in no way trying to hurt anyone here and that was not the intention. Going forward I will not do this again but it just happened and I initially did not think it through. Thanks again.
Dating two guys - when should I cut it off with one of them?
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