Husband or my wrong???

Short background....

We came into our relationship with 1 child each from previous relationships. I share 50/50 & he has full custody with the mother being absent 95% of the time. Regardless of my ups & downs with my sons father we have always had a good co-parenting relationship in every way. I got along with his wife (now ex) and still have great relationships with his family.

My husband on the other hand doesn’t & never has. His sons mom is something else. She has given us nothing but drama since the moment she found out about me. She’s absent & has created a lot of unnecessary & unjustified problems.

So here’s the situation:

My sons father called me yesterday & said he had a few boxes of diapers that he didn’t need & wanted to get rid of. Asked if we would like them for our son. I said yeah & appreciated the thoughtfulness. When I hung up my husband quickly started saying no. That it was disrespectful & it messes with his pride. I calmly asked why & what was the issue. He couldn’t answer or say. He just kept repeating that & then it lead to that I was taking my sons dad side!!! I never told him I would follow through with getting them or not. Fast forward today, he calls me & says that I no longer have to worry about the issue because he called him directly 8 said he didn’t need the diapers. It pissed me off! I told him he was now making an good thing and awkward situation & making an issue out of something that wasn’t one to begin with. He said that this is HIS kid & didn’t need a man who use to fuck me giving anything for his kids. I told him to grow the fuck up & deal with his insecurities because this is childish! My sons dad & I have always had a relationship that we give each other things occasionally for each other kids. To me, my husband walked into something that already existed & was established. Yet he’s making things weird unnecessary with someone who has never over stepped himself, made any issues or disrespected him. Yet he had the nerve to compare it to us accepting things from his sons mom?! UM NO, TOTALLY DIFFERENT!! My sons dad won’t say anything to me or anything like that but I know that it will be super awkward now when we are all around one another & there is just no need for that! I don’t get why he insist on making problems where they don’t exist!!! He makes snooty comments about the man among other things & when I get upset he says that my sons dad is my priority & I back him up. I say NO! You sound stupid & childish AND that’s the issue!!! This is my sons father & we have never been petty or had problems but its like he wants to create them. The man isn’t going away & why make problems with someone who has always been respectful & nice. Don’t we have enough with his sons mom?!

So am I wrong or him???