Just for context: DH is from Milan. He’s immensely proud of his roots and patriotic, often homesick and considers himself a massive foodie/culture vulture.
DH and I have three children under three and the youngest is six weeks old.
DH has a friend who has never really acknowledged me or the DC. Preferred to see DH on his own, doesn’t ask about us etc. He’s married with DC himself but apparently doesn’t mention his wife or children much either.
It’s his 40th birthday this weekend. It's my birthday too but not my 40th. The friend a few months ago tried to organise a weekend away with DH and some of their mutual friends in Edinburgh, celebrating his 40th.
DH originally told him he couldn’t attend due to it being my birthday and the fact we’ll still be adjusting to being a family of five and he can’t leave me alone yet.
Despite this DH’s friend has repeatedly tried to get him to go, right up until last week, saying things like he’ll only be 40 once and (they all went to uni in Edinburgh) it’ll be a reminder of the good old days. All which DH replied sorry but no.
Suddenly this week, guess where the celebratory weekend has relocated to? Milan! DH’s friend said he decided he’d like to go abroad and it’a a complete coincidence he chose Milan. He is now on wats app with DH constantly asking where shall we go? What shall we eat? What shall we see? What does this word mean? He’s also feigning complete incompetence, falling into deliberate tourist traps (IMO) to get DH to desperately put him back on the right track. DH has fallen into the trap and willingly spent his days recommending, suggesting, calling around and booking things for them all.
The result, which i’m Sure is the result his friend wanted, is that DH has inadvertently organised his ideal weekend in his home town, only he’s not going to be on it. The idea of his friends enjoying a weekend in his home city without him is more than DH can resist and today he asked me if he can go and can we celebrate my birthday when he gets back. 
I said - hold up! Can’t you see what your friend has done here? DH said no he’s always wanted to go and his friend figured the hotel prices in Edinburgh were so expensive that they might as well go abroad if they’re going to spend that money. 
AIBU or is DH’s friend manipulative?