Is it a job you'd be happy to lose?
Are you willing to get a reference from this employer where they say that the reason they dismissed you was because you made inappropriate and unprofessional advances towards a female co-worker?
If you want to keep this job or to get a good reference from them, be very professional towards this woman and every other woman you come across in the line of your work.
Do not do anything that could be or could be misinterpreted as sexual harassment.
There's billions of women on this planet that aren't your co-worker and that aren't clients of where you work. Go interact with women outside your work in a socially calibrated man to woman way.
And be so professional with the women at your work that it's down to them making a move on you.
With you being doubly professional when using the internal communications system. With you sending messages that are strictly work related and professional in tone.
Otherwise you could be handing them the evidence for misconduct on a plate.
A good policy to have is that you won't consider her as a potential romantic partner. But you would be open to starting a romance with someone from her social circle that you don't work with. And in return you'd be happy to introduce her to your friends. With this all being done via the normal social life and social events open to multiple people at your work.