So my boyfriend doesn't care if I give him hickeys as long as they aren't on his neck. Last night I was kissing his neck and just biting a tiny bit here and there and he ended up with a mild hickey that I didn't know about until this morning when he Snapchatted me saying he had to go to work. I apologized and I feel super bad about and I told him that I tried to be careful on his neck and didn't realize that I did anything that bad. I get why he's upset and like frustrated about having to wear a scarf and whatever and that's fine I would be too but he's being a super bitch about it and idk what to do. It's not like I can take it back and it's not like I was a bitch about it when he complained to me. He said it was okay just not to bite his neck again and even sent hearts but then continued to be passive aggressive with me about it. Help?!?? What do I do?