<human>: I met my GF a few months ago. After a few months of going on dates, hanging out, etc., we finally became official a few weeks ago. The thing is, there's this girl I work with who I've had strong feelings for. This girl and I started to grow close at around the same time I met my GF, but through a combination of us being co-workers/thinking she only wanted to be friends, I didn't court her. 

Last week, this girl confessed to me that she had feelings for me all along, to which I responded by confessing my feelings for her. The girl from work knows about me and my GF, but my GF doesn't know the truth about the girl from work and me (she knows we're friends though). I had a talk with the girl from work, and she told me that considering I have a GF, she and I should just go back to being friends. But, ever since I found out my co-worker likes me back, I've been having doubts about my GF and me. I was perfectly happy with my relationship until the confession. I feel like that should be a sign that I should call it off before it gets too serious, but at the same time I really do like my GF. 

Both of these women are awesome people, but I don't want to cause anyone any unnecessary pain. I never thought it was possible to have strong, almost equal feelings, for two people. I'm just so confused and have no idea what to do. I'd appreciate any advice.

Give me a shortened version of the text
<bot>: Have a GF, female friend tells me she reciprocates romantic feelings, have no idea whether to call it off with my GF.