Guys, Would you cut off a female friend if you had feelings for her?

I had been best friends with this guy for over 2 years and he helped me through one of the most difficult times of my life. The last time I saw him was the first time I hugged him and that hug was long and he did not pat me on the back and I felt his heart rate go up.
Here's the catch. He had a girlfriend and she is the jealous type.
As a guy with a girlfriend, would you stop talking to a female friend if you started to like her as more than a friend to be loyal to your gf?
Guys, Would you cut off a female friend if you had feelings for her?
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