<p>I would say it is unwise to contact her parents. You never know what would happpen to this couple – It could happen that she will be your daughter-in-law.</p>
<p>When dealing with son’t gf or daughter’s bf (even a potential bf or gf), we keep saying to ourselves that we need to be extremely careful, even when we talk to our own child privately about his gf or her bf (because his gf or her bf will likely know what we say about her or him sooner or later.) THis is especially important if your loved one is a son – if in the future you still want to have an easy access to your grandchildren!</p>