You know, it must be a phase because DS did the same thing around 12 months. I just noticed at 2 yrs old how he loves his kisses and hugs and how he actually ASKS to get kisses. When I BF he did the same around 12 months didn't want hugs or barely to touch while BF. Now at 2 he loves it!! I sing a song that has hugs and kisses and he askes for me to sing "again".
So, hang in there.