I'm friends with a lovely bunch of mums that I met when I had DS. We keep in touch via WhatsApp, ask for advice, have play dates when we can and I see some of them at classes I do. We all did a secret Santa for the babies at Christmas so each child got a present from someone. Now we're hitting the birthdays. Only one of the mums is having a party so obviously I will take a present to the party. One of the other mums gave me a present for DS which was lovely and I will reciprocate for her DD next month. The Mum who is having the party didn't and I haven't seen the others (which is fine, I wasn't expecting presents for him).
I'm just wondering WIBU to just give the two presents I've mentioned above or should I buy for all of them? Given my DS has had his birthday if I give presents to those who haven't given presents to him would they feel embarrassed and obliged to then get him something?