I will say when Belle called his name, he seemed tentative and uncertain as to what she might say or do as he turned around. I think when she said she loved him he seemed relieved and able to let his guard down enough to return an I love you he had been longing to say for many years.
I agree.
Also, I just got home and logged onto my tumblr and there’s this interesting post, analyzing the first scene from Skin Deep. Anti-Rumbelle fans argue that what Belle felt towards Rumpel was Stolkholm Syndrome, but looking at these caps, don’t indicate that at all.