What should I do?

WOW, this is really tough on you?? Especially if you kissed both of them?, Well even though they might be good friends outside of work and maybe during work, you need to go with what your heart says, Because you might have found true love now (or maybe not) and you cant let it go just because they are friends, if you do go out with one of them maybe they will be pissed off at each other but they will forget about it, but you cant really ask anyone who should you be dating, thats all up to you, but chose the one you are most comfortable with to be around, and one who actually has time to talk to you, when a girl really wants to get to know a guy, she will spare some time for the guy to talk with and to go out with him, so just go with the one who actually has time to talk to you and go out.