Thank you all so much for your responses and for being understanding of my situation. I really don't want to sound like I'm trying to get in between his family or anything it's just hard to deal with for some reason.
Perna, what you said is definitely true, I've never quite met a man who is so affectionate (not in public due, he seems to have phobia of pda

) and I love it because I'm like that myself. The thought that I have to share his affection though just gets to me in a way.
And almostthere, thanks for sharing your story, it really gave me something to think about. I'm still hoping that he becomes more independent once he leaves "the nest".
I'm still struggeling with it though because in a way I'm very happy for him that he has such a loving family and that he has 6 people in the world who care deeply for him(whereas I have one, which would be my mom) but on the other hand I feel like if it bothers me so much I have a right to feel that way. I just don't know what to do. He loves me, I know that but I don't know if I should address this topic. It's so touchy and I don't know if I could address this in a fair and respectful manner :/
Thank you again everybody for your replies! It really helps to just talk about it and get some feedback!