Dude there’s plenty of women out there. Why get all worked up over one that is taken? She IS off the market. Whether it’s good, bad, ugly or over, she is off the market mentally for some time to come. You can’t have it. It’s up to her, if she wanted to be with you, she would be.

If they were to break up today, you can’t even have it for at the very least 6 months. At the very least. Maybe even longer a year, two, possibly ever. She is still with him. Forget about her.

That’s a rule I have. Even if I like her a lot, and I know she likes me a lot, say she is in a relationship that I know is doomed any day, and then they do break up as expected, if I like her, I take my chances and let her be for at least 6 months. I back off and let her be. Until I can tell she is doing better. I’m good at this. It doesn’t always work, I have done this before recently, the last few years back, and when I saw an opportunity, I took it… but I didn’t get it. I missed out by a few weeks or a month. Just barely but it’s better than being the rebound. Or that guy. Looking bitterly at a woman who is simply not yours and probably won’t ever be. That looks weak too. Be cool. Don’t be needy, and don’t appear envious.

She is mentally committed no matter what her status is.

Find another one. You are asking for trouble.