Hi L.,
I am assuming you mean "single" mom, I wasn't sure what you meant at first.
You are an AUNT, therefore YOU ARE ALLOWED TO SPOIL YOUR NEPHEWS!!! I am an AUNT and have ALWAYS spoilt all of my neices and nephews!! I now have a son and he is spoilt from other folks, and since I have a great relationship with my nephews, I also give them generous gifts on their b-days & Christmases. I also remember to send them cards and momentos ($$ too) on Valentine's Day, Halloween, and other little Holidays. I guess your dh is looking at it in the sence that since you have 3 kids of your own, you have enough responsibilities there.
Your dh needs to know that you have a special relationship with your nephew (s) and you want to do this for them. On the other hand, maybe you might want to modify your gift-giving to not necessarily be equal or the same, but always follow it up with something special just for him. A mini-scrapbook of him growing up, or something special that you make for him, it is not always about $$, but I know were you are coming from. Since I only have 1 child, it is easier for me to do for my nephews, but you dh should not deprive you of doing for him if that makes you feel good. I enjoy giving anyway and my friends has gotten used to it. It isn't always a store item, sometimes it is giving for myself, time, or something home-made. Also, it doesn't always have to be the same gift for your son as your nephews, this may cause hidden resentment on your son's part, but doing something along the same lines is fine. Just be moderate. You don't always have to do for your kids either, spent more time with them rather than gifts.
I will always give my nephews gifts no matter what until after they probably get married. We are very close and that is just the way it is!!
I have one of their b-days coming up in February and have already purchased something for him from this past summer (great clothes on sale at the Children's Place) and I plan to send him a b-day card with these items and probably some $$ too!
I don't argue with my dh, I just do it. If it is causing a financial burden, then re-think it, but if it isn't, then what is the harm. He knows you love him, (tell him obviously) and that is what matters!!
So, I am with you girl!!
Gladys B.