Advice please experienced single-mums and dads too if you're out there and tuned in:
I want to ask my friend's son to join me an my son on holiday for a few days. Poss a week. Poss costs around £300 - £400 per person. I know she will say yes because they are huge mates - but how do I approach the cost of him coming along? I'm not particularly well off at the moment due to divorce costs etc so unfortunately I am not able to pay for him in full much as I would love to be able to do so.