Son and his GF had been together a couple of months when she announced pregnancy, they moved in together and we now have a 6 month old beautiful GS. GF occasionally goes on a drinking spree and tells DS he is not baby's father, a previous boyfriend is. When sober she then insists DS is the father. We have discovered she lies quite a lot about other things and now we're worried that maybe DS really isn't baby's Dad. We don't know what to do as we all adore this child so much but I can't bear to think she is using the baby just to keep my son and us as a meal ticket ( about £3K lent so far and never repaid). Should I secretly get a DNA test ? I feel it better for everyone to know the truth now rather than in years to come. But I also feel awful if I went behind son's back......so confused and upset..
Is it rude to not finish a book club choice that was selected by someone else?

