As a male in my early twenties, working as a developer I've come to realize that it's just better to not even try to engage in small talk and/or non-work related conversations with female co-workers. I keep it dry and basic. Just last week I had a buddy who was on the phone with his brother and blurted "Bro, she was amazing, then I left her house haha" he was fired the next day because a co-worker overheard his conversation and felt uncomfortable.