The perfect couple or flirty friends?

Dear Dan
You and this woman may make a handsome couple but she already has a relationship on her books - and it's not with you. How do you know she has no intention of leaving her boyfriend? Did you ask her? How can she be so sure? I hope you didn't ask her because this is the type of conversation you have much later on - or never. Why? Because if you're moving in on someone by stealth - which is your only option with someone who's already spoken for - the last thing you want to do is make them crystallise their feelings, especially when they are so unsure of them themselves.

Everything needs to be kept light and blurry and flirty and non-committal. Can you manage that? This woman may only be toying with you or she may reciprocate your feelings. The only way to see what happens is to wait and see what happens. Meanwhile, take your mind off the situation by going out with a nice single girl who wants you and you alone. And try to work out how you'd really feel if the unavailable dabbler landed on your doorstep with a suitcase.