I’ve been FWB with this guy for almost a year straight— last night I hooked up with him and the sex felt a lot different than usual (more intimate)? He ended up giving two large hickeys on my neck which he has NEVER done. He always makes jokes about how I’m his & I can’t be with anyone else but he can be with anyone he wants? But all of a sudden he’s being sweet to me and not acting like himself since last night?