<human>: My SO [23 F] and I [22 M] have been in a relationship for 3 years but there's this girl at the office who is very nice to me. Yesterday this office mate [20 F] asked me out for coffee and I said yes. We usually chat in the office with our free time and for me there is nothing more to it than a friendly talk.  Am I already cheating and is this girl in the office interested in me?

I am very new to this experience because no girl has ever asked me to go out with them before because it is me who usually do that part. Thanks reddit!

Condense the text into a few key points
<bot>: Me [22 M] with my SO [ 24 F] dating for 3 years, did I cheat on her if I agreed to go out for coffee with officemate [20 F]?