Friends are unhappy about our engagement

When we got engaged in December I text people who I thought were important to us, to give them a heads up before I posted it on social media. He has a lot of friends and I get along well with everyone. We received very mixed emotion congratulations from 4 of his friends, two he's been friends with since high school, one older friend of his and one of his friends wife. (all of them are married except one from high school). Come to find out they were all upset that my fiance did not come to them first before proposing! They have since then almost cut us out of their lives, as we were close and saw each other frequently. My fiancé tries to act like this does not bother him but I know it does, but it bothers me. One guy mentioned he was losing his friend but it is not like that at all as we do spend quite some time apart. He still wants to put them in our wedding, I don't know how to get over my resentment towards them as they did take away some of our excitement of our engagement.